Question

solve 4a^2+5a-9=0 plz ...quick

Answer 1

4a^2 + 5a - 9 = 0
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4a^2 -4a +9a -9 = 0
4a (a-1) +9 (a-1) = 0
(4a+9) (a-1) = 0
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a = (-9/4) & +1
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Answer 2

see attachment ...I hope it will help u..