Question

IF
x + y + z = 8 and xy + yz + zx =20,
Find the value of x3+y3+z3 -3 x y z​

Answer 1

Answer:

it can be done through the formula...

Step-by-step explanation:

$(x + y + z) 3 = x3 + y3 + x3 + 2(xy + yz + xz)$

putting the value of the variables according to the formula...

(8)³=x³+y³+z³+2(20)

512=x³+y³+z³+40

512-40=x³+y³+z³

472=x³+y³+z³

hope it helps...

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Answer 2

Answer:

it is helpful to you

Thank you