Fow what value of x is the expression x^2 Equal to 9? please show how to do...
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here.........................
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(x^2-9)=0
(x^2-3^2)=0
(x-3)(X+3)=0
X=3 or X=-3
(x^2-3^2)=0
(x-3)(X+3)=0
X=3 or X=-3
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