Question

Someone please help

Answer 1

1. x = 36

2. x = -2, x = 5

Explanation:

Secant - Secant Power Theorem: 12(12 + x) = 10(18)

144 + x = 180

x = 36

Chord - Chord Power Theorem: (x - 2)(x + 7) = 4(2x - 1)

x^2 + 5x - 14 = 8x - 4

x^2 - 3x - 10 = 0

Factor:

(x + 2)(x - 5) = 0

x = -2, x = 5