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18(r-) -(4-3) = x+2, then x= = x+2,...
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18(r-) -(4-3) = x+2, then x= = x+2, then x = (a) 3 (c) 4 (b) 2 (d) None of these
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(c) Use options or apply the formula ( a^{2}-b^{2}=(a-b)(a+b), ) we get ( x=4 )
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