Question

Y = (x+2) (-X-1)
Answer the question using null law

Answer 1

Explanation:

y=(x+2) (-x-1)

(45) - (+14)

y= (x+2) (-x-1)

y=-2

Answer 2

x = - 2, x = - 1

Explanation:

Given

y = (x + 2)(- x - 1)

To solve for x let y = 0, that is

(x + 2)(- x - 1) = 0

Equate each factor to zero and solve for x

x + 2 = 0 ⇒ x = - 2

- x - 1 = 0 ⇒ - x = 1 ⇒ x = - 1