Question

-If x+y=10 and x-Y=6 whatis value of X3-Y3

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Answer 1

Answer = 18


If you mean x times 3 and y times 3, x= 8 and y = 2 so (8*3)-(2*3)=18

Answer 2

Answer:

$18$

Step-by-step explanation:

$x + y = 10 (1)\\ x - y = 6(2) \: \\ 2y = 4 \: \: ie \: y = 2 \\ x + y = 10 \\ x = 10 - 2 \\ x = 8 \\ x3 - y3 = (8 \times 3) - (2 \times 3) \\ = 24 - 6 \\ = 18$