Answered

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factor the trinomial

y (to the second) -10y+21

Sagot :

Mariamikaylaidn
[tex]y^2-10y+21 \to y^2-3y-7y+21= \\\\ = y(y-3)-7(y-3)= \\\\ =\boxed{(y-3)(y-7)}[/tex]
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