Enrhifo
4xy
Ehangu
4xy
Rhannu
Copïo i clipfwrdd
x^{2}+2xy+y^{2}-\left(x-y\right)^{2}
Defnyddio'r theorem binomaidd \left(a+b\right)^{2}=a^{2}+2ab+b^{2} i ehangu'r \left(x+y\right)^{2}.
x^{2}+2xy+y^{2}-\left(x^{2}-2xy+y^{2}\right)
Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(x-y\right)^{2}.
x^{2}+2xy+y^{2}-x^{2}+2xy-y^{2}
I ddod o hyd i wrthwyneb x^{2}-2xy+y^{2}, dewch o hyd i wrthwyneb pob term.
2xy+y^{2}+2xy-y^{2}
Cyfuno x^{2} a -x^{2} i gael 0.
4xy+y^{2}-y^{2}
Cyfuno 2xy a 2xy i gael 4xy.
4xy
Cyfuno y^{2} a -y^{2} i gael 0.
x^{2}+2xy+y^{2}-\left(x-y\right)^{2}
Defnyddio'r theorem binomaidd \left(a+b\right)^{2}=a^{2}+2ab+b^{2} i ehangu'r \left(x+y\right)^{2}.
x^{2}+2xy+y^{2}-\left(x^{2}-2xy+y^{2}\right)
Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(x-y\right)^{2}.
x^{2}+2xy+y^{2}-x^{2}+2xy-y^{2}
I ddod o hyd i wrthwyneb x^{2}-2xy+y^{2}, dewch o hyd i wrthwyneb pob term.
2xy+y^{2}+2xy-y^{2}
Cyfuno x^{2} a -x^{2} i gael 0.
4xy+y^{2}-y^{2}
Cyfuno 2xy a 2xy i gael 4xy.
4xy
Cyfuno y^{2} a -y^{2} i gael 0.
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
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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}