Answer:
x=-7/3, 7/3.
Explanation:
0=9x^2-49
9x^2-49=0
factor
(3x+7)(3x-7)=0
3x+7=0, 3x-7=0
3x=0-7, 3x=-7, x=-7/3
3x=0+7, 3x=7, x=7/3
7/3 or -7/3
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