Question

if a + b = 6 and AB = 8 find a³ + b³

Answer 1

HIII

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Answer 2

Answer: 72

Step-by-step explanation:

${a}^{3}$+${b}^{3}$=${(a+b)}^{3}$-3ab(a+b)

Put the values of a+b ,ab

${a}^{3}$+${b}^{3}$=${6}^{3}$-3×8(6)

${a}^{3}$+${b}^{3}$=216-144

${a}^{3}$+${b}^{3}$=72

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