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OpenStudy (anonymous):
factor the trinomial y^2 -10y+21
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OpenStudy (solomonzelman):
no not everythin, the constants are negative, my bad.
OpenStudy (solomonzelman):
(y -7) (y-3) see?
OpenStudy (solomonzelman):
@esmig10, do you understand
OpenStudy (solomonzelman):
factors of 21 21 & 1 7 & 3 (you can put some or all negative or positive.) what combination of those factors add up to -10, and make 21 when you multiply them together?
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