Leysa 1+x^2+3^2=73^80

$$1 + x ^ { 2 } + 3 ^ { 2 } = 73 ^ { 80 }$$

Leystu fyrir x

$$x=27\sqrt{159625136378446553075863702966305967474231606297442593984147154536668057320812071611704105720360666325372882202195178481099812595790058546334332879}\approx 3.411256725 \cdot 10^{74}$$

$$x=-27\sqrt{159625136378446553075863702966305967474231606297442593984147154536668057320812071611704105720360666325372882202195178481099812595790058546334332879}\approx -3.411256725 \cdot 10^{74}$$

Skref fyrir útreikning kvaðratrótar

Reiknaðu 3 í 2. veldi og fáðu 9.

$$1+x^{2}+9=73^{80}$$

Leggðu saman 1 og 9 til að fá 10.

$$10+x^{2}=73^{80}$$

Reiknaðu 73 í 80. veldi og fáðu 116366724419887537192304639462437050288714840990835651014443275657231013786872000204932293070142925751196831125400285112721763382330952680277728668801.

$$10+x^{2}=116366724419887537192304639462437050288714840990835651014443275657231013786872000204932293070142925751196831125400285112721763382330952680277728668801$$

Dragðu 10 frá báðum hliðum.

$$x^{2}=116366724419887537192304639462437050288714840990835651014443275657231013786872000204932293070142925751196831125400285112721763382330952680277728668801-10$$

Dragðu 10 frá 116366724419887537192304639462437050288714840990835651014443275657231013786872000204932293070142925751196831125400285112721763382330952680277728668801 til að fá út 116366724419887537192304639462437050288714840990835651014443275657231013786872000204932293070142925751196831125400285112721763382330952680277728668791.

$$x^{2}=116366724419887537192304639462437050288714840990835651014443275657231013786872000204932293070142925751196831125400285112721763382330952680277728668791$$

Finndu kvaðratrót beggja hliða jöfnunar.

$$x=27\sqrt{159625136378446553075863702966305967474231606297442593984147154536668057320812071611704105720360666325372882202195178481099812595790058546334332879} x=-27\sqrt{159625136378446553075863702966305967474231606297442593984147154536668057320812071611704105720360666325372882202195178481099812595790058546334332879}$$

Skref með annars stigs formúlu

Reiknaðu 3 í 2. veldi og fáðu 9.

$$1+x^{2}+9=73^{80}$$

Leggðu saman 1 og 9 til að fá 10.

$$10+x^{2}=73^{80}$$

Reiknaðu 73 í 80. veldi og fáðu 116366724419887537192304639462437050288714840990835651014443275657231013786872000204932293070142925751196831125400285112721763382330952680277728668801.

$$10+x^{2}=116366724419887537192304639462437050288714840990835651014443275657231013786872000204932293070142925751196831125400285112721763382330952680277728668801$$

Dragðu 116366724419887537192304639462437050288714840990835651014443275657231013786872000204932293070142925751196831125400285112721763382330952680277728668801 frá báðum hliðum.

$$10+x^{2}-116366724419887537192304639462437050288714840990835651014443275657231013786872000204932293070142925751196831125400285112721763382330952680277728668801=0$$

Dragðu 116366724419887537192304639462437050288714840990835651014443275657231013786872000204932293070142925751196831125400285112721763382330952680277728668801 frá 10 til að fá út -116366724419887537192304639462437050288714840990835651014443275657231013786872000204932293070142925751196831125400285112721763382330952680277728668791.

$$-116366724419887537192304639462437050288714840990835651014443275657231013786872000204932293070142925751196831125400285112721763382330952680277728668791+x^{2}=0$$

Annars stigs jöfnur á borð við þessa, með x^{2} lið en engan x lið, er enn hægt að leysa með annars stigs formúlu, \frac{-b±\sqrt{b^{2}-4ac}}{2a}, þegar þær eru settar í staðlað form: ax^{2}+bx+c=0.

$$x^{2}-116366724419887537192304639462437050288714840990835651014443275657231013786872000204932293070142925751196831125400285112721763382330952680277728668791=0$$

Jafnan er í staðalformi: ax^{2}+bx+c=0. Settu 1 inn fyrir a, 0 inn fyrir b og -116366724419887537192304639462437050288714840990835651014443275657231013786872000204932293070142925751196831125400285112721763382330952680277728668791 inn fyrir c í annars stigs formúlunni \frac{-b±\sqrt{b^{2}-4ac}}{2a}.

$$x=\frac{0±\sqrt{0^{2}-4\left(-116366724419887537192304639462437050288714840990835651014443275657231013786872000204932293070142925751196831125400285112721763382330952680277728668791\right)}}{2}$$

Hefðu 0 í annað veldi.

$$x=\frac{0±\sqrt{-4\left(-116366724419887537192304639462437050288714840990835651014443275657231013786872000204932293070142925751196831125400285112721763382330952680277728668791\right)}}{2}$$

Margfaldaðu -4 sinnum -116366724419887537192304639462437050288714840990835651014443275657231013786872000204932293070142925751196831125400285112721763382330952680277728668791.

$$x=\frac{0±\sqrt{465466897679550148769218557849748201154859363963342604057773102628924055147488000819729172280571703004787324501601140450887053529323810721110914675164}}{2}$$

Finndu kvaðratrót 465466897679550148769218557849748201154859363963342604057773102628924055147488000819729172280571703004787324501601140450887053529323810721110914675164.

$$x=\frac{0±54\sqrt{159625136378446553075863702966305967474231606297442593984147154536668057320812071611704105720360666325372882202195178481099812595790058546334332879}}{2}$$

Leystu nú jöfnuna x=\frac{0±54\sqrt{159625136378446553075863702966305967474231606297442593984147154536668057320812071611704105720360666325372882202195178481099812595790058546334332879}}{2} þegar ± er plús.

$$x=27\sqrt{159625136378446553075863702966305967474231606297442593984147154536668057320812071611704105720360666325372882202195178481099812595790058546334332879}$$

Leystu nú jöfnuna x=\frac{0±54\sqrt{159625136378446553075863702966305967474231606297442593984147154536668057320812071611704105720360666325372882202195178481099812595790058546334332879}}{2} þegar ± er mínus.

$$x=-27\sqrt{159625136378446553075863702966305967474231606297442593984147154536668057320812071611704105720360666325372882202195178481099812595790058546334332879}$$

Leyst var úr jöfnunni.

$$x=27\sqrt{159625136378446553075863702966305967474231606297442593984147154536668057320812071611704105720360666325372882202195178481099812595790058546334332879} x=-27\sqrt{159625136378446553075863702966305967474231606297442593984147154536668057320812071611704105720360666325372882202195178481099812595790058546334332879}$$