Question

Solve the equation: x2 + 8x + 16 = 49
Enter the smallest zero value. Use a number only.

Answer 1

x2 + 8x + 16 = 49
using a^2 +2ab + b^2 = (a+b)^2 we get

(x+4)^2 = 7^2
x+4 = ±7

x=3 or x=-11

Answer 2

Solve the equation: (x + 1)2 = 9.
Enter the largest zero value. Use a number only.

Answer 3

it is just the same!! can you try it?

Answer 4

2x +2 =9
2x=7

x=7/2???