Question

factorize
please
help
me

$a {}^{2} - 4b {}^{4}$
​

Answer 1

Answer:

$(a+2b^{2} )(a-2b^2)$

Step-by-step explanation:

You have what is called "perfect squares" so you can use the "difference of squares formula to factor:

$a^2-b^2=(a+b)(a-b)$

So,

$a^2-(2b^2)^2$

you can work the equation backward now and you will get your original equation.