Question

(x2 – 2x)2 + 5(x2 – 2x) – 36
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Answer 1

Step-by-step explanation:

using (a-b)² in (x²-2x)²

here, a=x², b=2x

hope you understand.....

Answer 2

Answer:

a²+5a-36

=a²+(a-4)a-36

a²+9a-4a-36

a(a+9)-4(a+9)

(a+9)(a-4)

replacing a by x²-2x,we get

(x²-2x9)(x²-2x-4)