if 2x=3y-5 find the value of 8x³-27y³+90xy+115
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Answer:
here's is your answer
Explanation:
2x=3y−5
2x−3y=−5
Now let us cube on both sides, we get
(2x−3y)
3
=(−5)
3
(2x)
3
−(3y)
3
−3×2x×3y(2x−3y)=−125
8x
3
−27y
3
−18xy(2x−3y)=−125
No, substitute the value of 2x−3y=−5
8x
3
−27y
3
−18xy(−5)=−125
8x
3
−27y
3
+90xy=−125
8x
3
−27y
3
+90xy+125=0
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