1) Find the product of (5x + 4) and (x2 – 3x) and verify the result for x = -2.
2) Factorize 3(2x – y)2 + 14 (2x – y) + 8 by splitting the middle term.
3) The numerator of a fraction is 8 less than the denominator. If the numerator is increased by 17 and the denominator is decreased by 1, the new fraction obtained is 3/2, Find the fraction.
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Answer:
1) ( - 60 )
Step-by-step explanation:
1) (5x + 4) × (x² - 3x) if x = -2
=> {5 × (-2) + 4} × {(-2)² - 3 × (-2)}
=> ( -10 + 4 ) × ( 4 + 6 )
=> (-6) × (10)
=> -60
Ans) ( - 60 )
2). the question is lil bit wrong ig in the 3(2x-y)2 ig it will be 3(2x-y)²
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