Question

Find the product. (7x+2)(x−1) A 8x+1 B 6x+3 C 7x2−5x−2 D 7x2−2

Answer 1

`\boxed{\red{7 {x}^(2) - 5x - 2}}`

Answer C is correct

Explanation:

`(7x + 2)(x - 1) \\ 7x(x - 1) + 2(x -1 ) \\ 7 {x}^(2) - 7x + 2x - 2 \\ = 7 {x}^(2) - 5x - 2`

Answer 2

7x^2 -5x-2

Explanation:

(7x+2)(x−1)

FOIL

first 7x*x = 7x^2

outer 7x*-1 = -7x

inner 2x

last 2*-1 = -2

Add them together

7x^2 -7x+2x -2

7x^2 -5x-2