2x² + 3x² - 1
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Step-by-step explanation:
2x^2 + 3x^2 - 1
5x^2 - 1
(√5x)^2 - (1)^2
(√5x -1) (√5x+1)....
hope this helps you...
Answered by
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2x2+3x2-1
=5x2-1
=(√5x-1)(√5x+1)
Thus x=1/√5 or -1/√5
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