Answers

  • Brainly User
2016-07-11T11:51:55+08:00
Solution:

x(x-3) = 4 (x+2)   Cross multiplication

x² - 3x = 4x + 8

x² - 3x - 4x -8 = 0

x² -7x - 8 = 0

Solve the roots by factoring:

(x - 8) (x + 1) = 0

x - 8 = 0              x + 1 = 0
x = 8                   x = -1
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