plzz help me with maths
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2x + 1/3x = 4
Multiply 3/2 on both sides
3/2 (2x + 1/3x) = 3/2 x 4
3x + 1/2x = 6 .................(1)
(3x + 1/2x)³ = 27x³ + 1/8x³ + 3*3x*1/2x(3x +1/2x)
6³ = 27x³ + 1/8x³ + (9/2)*6
216 - 27 = 27x³ + 1/8x³
27x³ + 1/8x³ = 189
Answer is b) 189
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