Enrhifo
\left(1.5-x\right)\left(x+2.5\right)
Ehangu
3.75-x-x^{2}
Graff
Rhannu
Copïo i clipfwrdd
4-\left(x^{2}+x+0.25\right)
Defnyddio'r theorem binomaidd \left(a+b\right)^{2}=a^{2}+2ab+b^{2} i ehangu'r \left(x+0.5\right)^{2}.
4-x^{2}-x-0.25
I ddod o hyd i wrthwyneb x^{2}+x+0.25, dewch o hyd i wrthwyneb pob term.
3.75-x^{2}-x
Tynnu 0.25 o 4 i gael 3.75.
4-\left(x^{2}+x+0.25\right)
Defnyddio'r theorem binomaidd \left(a+b\right)^{2}=a^{2}+2ab+b^{2} i ehangu'r \left(x+0.5\right)^{2}.
4-x^{2}-x-0.25
I ddod o hyd i wrthwyneb x^{2}+x+0.25, dewch o hyd i wrthwyneb pob term.
3.75-x^{2}-x
Tynnu 0.25 o 4 i gael 3.75.
Enghreifftiau
Hafaliad cwadratig
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Hafaliad llinol
y = 3x + 4
Rhifyddeg
699 * 533
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\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
Hafaliad ar y pryd
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Gwahaniaethu
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integreiddiad
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Terfynau
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}