Enrhifo
\left(a+2b\right)^{2}
Ehangu
a^{2}+4ab+4b^{2}
Rhannu
Copïo i clipfwrdd
\left(-a\right)^{2}-4\left(-a\right)b+4b^{2}
Defnyddio'r theorem binomaidd \left(p-q\right)^{2}=p^{2}-2pq+q^{2} i ehangu'r \left(-a-2b\right)^{2}.
a^{2}-4\left(-a\right)b+4b^{2}
Cyfrifo -a i bŵer 2 a chael a^{2}.
a^{2}+4ab+4b^{2}
Lluosi -4 a -1 i gael 4.
\left(-a\right)^{2}-4\left(-a\right)b+4b^{2}
Defnyddio'r theorem binomaidd \left(p-q\right)^{2}=p^{2}-2pq+q^{2} i ehangu'r \left(-a-2b\right)^{2}.
a^{2}-4\left(-a\right)b+4b^{2}
Cyfrifo -a i bŵer 2 a chael a^{2}.
a^{2}+4ab+4b^{2}
Lluosi -4 a -1 i gael 4.
Enghreifftiau
Hafaliad cwadratig
{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
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y = 3x + 4
Rhifyddeg
699 * 533
Matrics
\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}