Question

(3y
$(3y { } ^ {2} + 5y - 6) - (8y - y {}^{2} - 7)$
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Answer 1

$\huge\rm\underline\pink{Answer}$

$(3y²+5y-6)-(8y-y²-7)$

$=3y²+5y-6-8y+y²+7$

$=3y²+y²+5y-8y-6+7$

$=4y²-3y+1$