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maks197457 [2]
3 years ago
15

Solve the equation for all values of xx. 9x^2-64= 9x 2 −64= \,\,0 0

Mathematics
1 answer:
Keith_Richards [23]3 years ago
4 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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