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17 March, 02:36

Xsquared-8x+18 - (5xsquared-10x+7)

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  1. 17 March, 06:30
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    Your answer is 3x^2+2x+9

    you add like terms and change the signs of the numbers inside the parentheses before combining the terms

    8x^2 - 5x^2 = 3x^2

    -8x + 10x = 2x because the negative changes the sign to positive

    18 - 7 = 9
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