Enrhifo
-3
Ffactor
-3
Rhannu
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\frac{\frac{\left(-21\right)^{2}}{\left(-7\right)^{2}}+\frac{\left(-21\right)^{6}}{\left(-21\right)^{5}}}{\left(-2\right)^{2}}
I godi pŵer rhif i bŵer arall, lluoswch yr esbonyddion. Lluoswch 3 a 2 i gael 6.
\frac{\frac{\left(-21\right)^{2}}{\left(-7\right)^{2}}+\left(-21\right)^{1}}{\left(-2\right)^{2}}
Er mwyn rhannu pwerau sy’n rhannu’r un sail, tynnwch esbonydd yr enwadur o esbonydd y rhifiadur. Tynnwch 5 o 6 i gael 1.
\frac{\frac{441}{\left(-7\right)^{2}}+\left(-21\right)^{1}}{\left(-2\right)^{2}}
Cyfrifo -21 i bŵer 2 a chael 441.
\frac{\frac{441}{49}+\left(-21\right)^{1}}{\left(-2\right)^{2}}
Cyfrifo -7 i bŵer 2 a chael 49.
\frac{9+\left(-21\right)^{1}}{\left(-2\right)^{2}}
Rhannu 441 â 49 i gael 9.
\frac{9-21}{\left(-2\right)^{2}}
Cyfrifo -21 i bŵer 1 a chael -21.
\frac{-12}{\left(-2\right)^{2}}
Tynnu 21 o 9 i gael -12.
\frac{-12}{4}
Cyfrifo -2 i bŵer 2 a chael 4.
-3
Rhannu -12 â 4 i gael -3.
Enghreifftiau
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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]
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\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
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\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}