Question

a cube plus b cube plas c cuce plus 5 abc plus 64 equals to 195 and a equals to b plus c find b​

Answer 1

Answer:

a+b+c=5

a²+b²+c²=29

To find: a³+b³+c³-3abc

here,

a+b+c=5

sq. in both sides

a²+b²+c²+2ab+2bc+2ac=25

29+2ab+2bc+2ac=25

2ab+2bc+2ac=-4

ab+bc+ca=-2

now,

a³+b³+c³-3abc=(a+b+c)(a²+b²+c²-ab-bc-ac)

                        =5(29-(-2))

                         =155

HOPE IT HELPS

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Answer 2

Answer:

Answer is 155

hope this helps

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