Question

Factorize

1: x2-4x+4

2: x2-5x-6

3: x2-9x-10

4: x2-81

5: x2-361
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Answer 1

x2-81=0

Explanation:

where,

a2-b2=(a+b)

a2-b2= (a+b) (a-b)

so,

a=x

b=0

so the answer is 0

I hope it helps you