Math, asked by aravindprathi, 5 months ago

(x + 7)^3 – 8x^2(x + 7)

Answers

Answered by singlamonika1980

0

(a+b)³= a³+b³+3ab(a+b)

(x+7)³ -8x²(x+7)

x³+7³+3x(7)(x+7)-8x³-56x²

x³+343+21x(x+7)-8x³-56x²

-7x³+343+21x²+147x-56x²

-7x³-35x²+147x+343

7(-x³-5x²+21x+49)

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