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Today, 11:46

Solve the equation for all values of xx.

9x^2-64=

9x

2

-64=

/,/,0

0

+1
Answers (1)
  1. Today, 13:18
    0
    Factor:

    9x^2 - 64

    = (3x) ^2 - 8^2

    = (3x + 8) (3x - 8)

    If you want to solve it, let the equation equal zero

    (3x + 8) (3x - 8) = 0

    3x + 8 = 0; x = - 8/3

    3x - 8 = 0; x = 8/3

    Solutions: x = - 8/3 and x = 8/3
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