simplify (p-q)(p²-3pq+5q²) find its value for p=-3,q= "-1"
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Answer:
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Step-by-step explanation:
= [(-3) - (-1)] - [(-3)² - 3(-3)(-1) + 5(-1)²]
= (-3 + 1) - [3 - 3(-3)(-1) + 5(1)]
= (-3 + 1) - (3 - 9 + 5)
= (-2) - (-1)
= -2 + 1
= -1
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