Question

7) 4b2 + 8b + 7 = 4
What the answer

Answer 1

4b² + 8b + 3 = 0

4b² + 2b + 6b + 3 = 0

2b(2b + 1) + 3(2b + 1) = 0

(2b + 3)(2b + 1) = 0

b = -1/2 or b = -3/2

Answer 2

b= -1/2 or b= -3/2

1. Subtract 4 from both sides.
2. Factor left side of equation.
3. Set factors equal to 0.