Philip P. answered • 01/25/19
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You have an expression. You can only solve equations, and equations have = signs. You want to factor the expression.
25x2 - 121
(5x)2 - 112
Use the "difference of squares" factoring formula:
(a2 - b2) = (a+b)(a-b)
where a = 5x and b = 11 in your problem.
