Expand (7x+8y)³ lesson
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Step-by-step explanation:
(7x + 8y)³
(7x)³ + (8y)³ + 3(7x)²(8y) + 3(7x)(8y)²
343x³ + 512y³ + 3*49x²*8y + 3*7x*64y²
343x³ + 512y³ + 1176x²y + 1344xy²
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