I think you are asking about (-7x)^2 multiplied by x^2. The WikiAnswers notation does not allow all the characters so it is sometimes hard to tel If so, we first multiply the things in parentheses since that is what order of operations rules, PEMDAS, tells us. That would be 49x^2, now multiply that by x^2 and we have 49x^4
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The expression ( 7x ) multiplied by ( x ) can be simplified by applying the properties of multiplication. This results in ( 7x^2 ), which means 7 times the square of ( x ).
7xsquare = 7 x square = 1 x = +1 or -1
(2x-5) (x-1)
7x-x2 = x(7-x)
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