multiply: (y²+3)(y-7)
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(y²+3) ( y-7) = y³ + 3y - 7y² - 21
is the answer
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19
(y²+3)(y‐7)
(y²×y)‐(y²×7)+(3×y)‐(3×7)
y³‐7y²+3y‐21
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