Question

evaluate
$( - 12) {}^{3} + (7) {}^{3} + (5) {}^{3} \: without \: actually \: calculating \: the \: cubes$

Answer 1

Hey dear here is your answer!!!!!!

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⭐We know that
${a}^{3} + {b}^{3} + {c}^{3} = 3abc \\ {a}^{3} + {b}^{3} + {c}^{3} = 3 \times - 12 \times 7 \times 5 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = - 1260$
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Hope it helps u dear...⭐⭐⭐❣️