Question

Select all the correct answers.

Which expressions represent a quadratic expression in factored form?
x²-x-72
(x+3)(x-7)
-8(x + 56)
(x + 1)(x - 2)
(x-2) + (x + 3)

Answer 1

(x + 3)(x - 7)

(x + 1)(x - 2)

Explanation:

The general form of factored equations :

y = (x + a)(x + b) [it can be ±, so don't worry about that part]

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Hence, the expressions which are in factored form :

⇒ (x + 3)(x - 7)

⇒ (x + 1)(x - 2)