Question

Solve: x(x+2)(x^2-1)=-1​

Answer 1

Answer:

The answer is (x^2 + 2x)(x^2 - 1) = -1

x^4 - x^2 + 2x^3 - 2x = p(x)

(-1)^4 - (-1)^2 + 2(-1)^3 - 2(-1) =p(-1)

1 - 1 - 2 + 2 = 0

0 = 0

p(-1) = 0

HENCE SOLVED

Step-by-step explanation:

Answer 2

Answer:

x=−1.618034,0.618034

Step-by-step explanation:

Let's solve your equation step-by-step.

x(x+2)(x2−1)=−1

x4+2x3−x2−2x=−1

Step 1: Subtract -1 from both sides.

x4+2x3−x2−2x−(−1)=−1−(−1)

x4+2x3−x2−2x+1=0

Step 2: Use quartic formula.

x=−1.618034,0.618034