Step-by-step explanation:
Step 1: Subtract -8 from both sides.
x2+4x−40−(−8)=−8−(−8)
x2+4x−32=0
For this equation: a=1, b=4, c=-32
1x2+4x+−32=0
Step 2: Use quadratic formula with a=1, b=4, c=-32.
x=−b±√b2−4ac2a
x=−(4)±√(4)2−4(1)(−32)2(1)
x=−4±√1442
x=4 or x=−8
Answer:
x=4 or x=−8 = The first one
