Question

If 2x=3y-5,then find the value of 8x^3-27y^3-90xy+125​

Answer 1

$8 {x}^{3} - 27 {y}^{3} - 90xy + 125 \\ ={(2x - 3y)}^{3} \\ = {( - 5)}^{3} \\ = 125$

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Answer 2

answer is 125

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