Question

36z^2-4

Answer 1

have you try to solve this question ?

Answer 2

For this question you need to do to write the 36 in the square from
Would you rite this ?

Answer 3

See we have the 36 = 6^2and 4=2^2
So we write the 36z^2 - 4 = (6z)^2 - 2^2
And then use the formula a^2 - b^2 = ( a+b) (a-b)
I hope this will help you ....