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Mathematics 11 Online
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)

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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