1 By how much does 30²-5x+6 exceed x² - x² + ux-12
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Answer:
Required solution=3x
2
−5x+6−(x
2
−2ax+5)
=2x
2
−(5+2a)x+1
∴x
2
−2ax+5 exceeds 3x
2
−5x+6 by 2x
2
−(5+2a)x+1
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