Question

(3) (x3 + 4x2 – 8) = (x+3)​

Answer 1

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

$→x3+4x2−8=x+3$

Step 1: Subtract x+3 from both sides.

$→x3+4x2−8−(x+3)=x+3−(x+3)$

$→x3+4x2−x−11=0$

Step 2: Use cubic formula.

$→x=−3.285142,−2.221876,1.507019$

Answer:

$→x=−3.285142,−2.221876,1.507019$