Question

(a+2b+c)(a²+4b²+c²-2ab-2bc-ca) find product

Answer 1

hey here is your answer
this is an identity

${(a + b + c)} ({a}^{2} + {b}^{2} + {c}^{2} - ab - bc - ac) \\ = {a \: }^{3} \: + {b}^{3} + {c}^{3} - 3abc$
so the answer is
${a}^{3} + {2b}^{3} + {c}^{3} - 3 \times a \times 2b \times c$
$= {a}^{3} + {2b}^{3} + {c}^{3} - 6abc$
answer
hope this help you
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