Enrhifo
x\left(x+14\right)
Ehangu
x^{2}+14x
Graff
Rhannu
Copïo i clipfwrdd
x^{2}+14x+49-49
Defnyddio'r theorem binomaidd \left(a+b\right)^{2}=a^{2}+2ab+b^{2} i ehangu'r \left(x+7\right)^{2}.
x^{2}+14x
Tynnu 49 o 49 i gael 0.
x^{2}+14x+49-49
Defnyddio'r theorem binomaidd \left(a+b\right)^{2}=a^{2}+2ab+b^{2} i ehangu'r \left(x+7\right)^{2}.
x^{2}+14x
Tynnu 49 o 49 i gael 0.
Enghreifftiau
Hafaliad cwadratig
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y = 3x + 4
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699 * 533
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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Terfynau
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}