Question

(x-10)(x+12) expand it by the formula

Answer 1

Step-by-step explanation:

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(x-10)(x+12) expand it by the formula

Answer 2

It can be expanded by using identity

(x +a) (x+b) = x^2 + (a+b)x +ab

Thus in the given question

Let X= xa = - 10 b = 12

Therefore

X^2 + (-10 + 12)x + (-10)(12)

X^2 + 2x - 120

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