Question

expand (4a -2b-3c)³​

Answer 1

Answer:

$64a^{3}-8b^{3}-27^{3}-96a^{2}b-144a^{2}c+48ab^{2}-36b^{2}c+108ac^{2}-54bc^{2}+144abc$

Step-by-step explanation:

∵ $(a+b+c)^{3} = a^{3}+b^{3}+c^{3} + 3a^{2}b+3a^{2}c+3b^{2}a+3b^{2}c+3c^{2}a+3c^{2}b+6abc$

Answer 2

Answer:

64a³-8b³-27c³-96a²b-144a²c+

48b²a-36b²c+108c²a-54c²b+144abc

Step-by-step explanation:

(4a -2b-3c)³

=>(4a -2b-3c)²(4a -2b-3c)

=>(16a²+4b²+9c²-16ab+12bc-24ca)(4a -2b-3c)

=>64a³+16ab²+36ac²-64a²b+48abc-96a²c

-32a²b-8b³-18c²b+32b²a-24b²c+48abc

-48a²c-12b²c-27c³+48abc-36bc²+72c²a

=>64a³-8b³-27c³

-96a²b-144a²c+48b²a-36b²c+108c²a-54c²b+144abc

Thanks

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