please give the answer
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Answer:
(i) x³ - 5x² - 5x + 50
(ii) 7x²+48xy-7y²
Step-by-step explanation:
(i) (x²-5) (x-5) + 25
=(x³ - 5x²-5x+25)+25
=x³ - 5x² - 5x + 50
(ii) (x+7y)(7x-y)
=7x²-xy+49xy-7y²
= 7x²+48xy-7y²
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