Question

Find the solutions
x3 + 7x2 – X – 7 = 0

Answer 1

x=-7,-1,1

Explanation:

Answer 2

x=−1 or x=1 or x=−7

Explanation:

x3+7x2−x−7=0

Step 1: Factor left side of equation.

(x+1)(x−1)(x+7)=0

Step 2: Set factors equal to 0.

x+1=0 or x−1=0 or x+7=0

x=−1 or x=1 or x=−7