Question

If x * (x + 2) = 49, find x

Answer 1

x = -8.07107, 6.07107

Explanation:

Quadratic Formula:
`x=(-b+/-√(b^2-4ac) )/(2a)`

Step 1: Write out equation

x(x + 2) = 49

Step 2: Distribute

x² + 2x = 49

Step 3: Subtract 49 on both sides

x² + 2x - 49 = 0

Step 4: Quadratic Formula

a = 1

b = 2

c = -49

x = -8.07107, 6.07107