Answer
$.7y^{2}-.4y$
Work Step by Step
$7.6y+3.2y^{2}-8y-2.5y^{2}=3.2y^{2}-2.5y^{2}-8y+7.6y=(3.2-2.5)y^{2}+(-8+7.6)y=(.7)y^{2}+(-.4)y=(.7)y^{2}+(-.4)y=.7y^{2}-.4y$
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