Enrhifo
3x\left(x+2\right)
Ehangu
3x^{2}+6x
Graff
Rhannu
Copïo i clipfwrdd
4x^{2}+4x+1-\left(x-1\right)^{2}
Defnyddio'r theorem binomaidd \left(a+b\right)^{2}=a^{2}+2ab+b^{2} i ehangu'r \left(2x+1\right)^{2}.
4x^{2}+4x+1-\left(x^{2}-2x+1\right)
Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(x-1\right)^{2}.
4x^{2}+4x+1-x^{2}+2x-1
I ddod o hyd i wrthwyneb x^{2}-2x+1, dewch o hyd i wrthwyneb pob term.
3x^{2}+4x+1+2x-1
Cyfuno 4x^{2} a -x^{2} i gael 3x^{2}.
3x^{2}+6x+1-1
Cyfuno 4x a 2x i gael 6x.
3x^{2}+6x
Tynnu 1 o 1 i gael 0.
4x^{2}+4x+1-\left(x-1\right)^{2}
Defnyddio'r theorem binomaidd \left(a+b\right)^{2}=a^{2}+2ab+b^{2} i ehangu'r \left(2x+1\right)^{2}.
4x^{2}+4x+1-\left(x^{2}-2x+1\right)
Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(x-1\right)^{2}.
4x^{2}+4x+1-x^{2}+2x-1
I ddod o hyd i wrthwyneb x^{2}-2x+1, dewch o hyd i wrthwyneb pob term.
3x^{2}+4x+1+2x-1
Cyfuno 4x^{2} a -x^{2} i gael 3x^{2}.
3x^{2}+6x+1-1
Cyfuno 4x a 2x i gael 6x.
3x^{2}+6x
Tynnu 1 o 1 i gael 0.
Enghreifftiau
Hafaliad cwadratig
{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometreg
4 \sin \theta \cos \theta = 2 \sin \theta
Hafaliad llinol
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}