Factor
4\left(x-4y^{2}\right)\left(x+4y^{2}\right)
Evaluate
4\left(x^{2}-16y^{4}\right)
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4\left(x^{2}-16y^{4}\right)
Factor out 4.
\left(x-4y^{2}\right)\left(x+4y^{2}\right)
Consider x^{2}-16y^{4}. Rewrite x^{2}-16y^{4} as x^{2}-\left(4y^{2}\right)^{2}. The difference of squares can be factored using the rule: a^{2}-b^{2}=\left(a-b\right)\left(a+b\right).
4\left(x-4y^{2}\right)\left(x+4y^{2}\right)
Rewrite the complete factored expression.
Examples
Quadratic equation
{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometry
4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
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Matrix
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Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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