Question

simplify (3m+4)^3+(7-3m)^3
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Answer 1

Step-by-step explanation:

$(3m \: + \: 4)^{3} \: + \: (7 - \: 3m) ^{3} \\ \\(3m - 3m + 4 + 7)^{3} \\ \\ = {11}^{3} \\ \\ = 1331$

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Answer 2

Step-by-step explanation:

(3m + 4)³ + (7 - 3m)³

(3m + 4 + 7 - 3m) {(3m+4)²-(3m+4)(7-3m)+(7-3m)²}

(11) *{9m²+24m+16+(3m+4)(3m-7)+49-42m+9m²}

11 * { 18m² - 18m + 65 + 9m² - 21m + 12m - 28 }

11 * { 27m² - 27m + 37 }

297m² - 297m + 407