$(9y^2 - 7y + 5) - (8y^2 - 7y + 2)$ $= y^2 + 3$
Work Step by Step
$(9y^2 - 7y + 5) - (8y^2 - 7y + 2)$ $= 9y^2 - 8y^2 - 7y + 7y + 5 - 2$ (Change signs and group like terms) $= y^2 + 3$ (Combine like terms)
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