Solve 2 cube root 8x+9=5

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asked Jan 26, 2017 206k views

1 Answer

Iftakharul Alam · Answer 1 · 2017-01-30T14:24:07+0000

2 times the cube root of 8x+9=5
divide both sides by 2
cube root of 8x+9=2.5
cube everybody (put to 3rd power)
8x+9=2.5^3
8x+9=15.625
minus 9 both sides
8x=6.625
divie both sides by 8
x=0.828125

Solve 2 cube root 8x+9=5

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