CBSE Class 9 Answered
Factorize
: 4x4 + 7x2 - 2
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
Expert Answer
Let x2 = y then equation is
4y2 + 7y - 2
= 4y2 + 7y - 2
= 4y2 + 8y - y - 2
= 4y(y + 2) - (y + 2)
= (y + 2)(4y - 1)
= (x2 + 2) (4x2 - 1)
= (x2 + 2) ((2x)2 - 1)
= (x2 + 2) (2x + 1) (2x - 1)
Answered by | 04 Jun, 2014, 03:23: PM
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