B. If x + 2y = 8 and xy = 6 find the value of x^3+8y^3
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we can assume the value of x & y
×y =6 the value ×&y maybe (1,6) (6,1)(3,2)(2,3)
by taking x=6 & y = 1 ,value fit in the equation
thus x^3+8y^3 = (6)^3 + 8(1)^3
=216 + 8
=224
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