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OpenStudy (anonymous):
Find the factors of 2a2 + a − 21. (2a + 21)(a − 1) (2a + 1)(a − 21) (2a + 3)(a − 7) (2a + 7)(a − 3)
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OpenStudy (anonymous):
so u want 2 nos whose product gives u -42 and sum gives u 1. can u guess them?
OpenStudy (anonymous):
(2a+7)(a-3)
OpenStudy (anonymous):
bingo!
OpenStudy (anonymous):
THANKS
OpenStudy (anonymous):
np!
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