Question 12

If (6x - 5) = (4x + 7), then the numerical value of $$(x + 1)^3$$ is

Solution

Expression : (6x - 5) = (4x + 7)

=> $$6x-4x=7+5$$

=> $$2x=12$$

=> $$x=\frac{12}{2}=6$$

$$\therefore (x+1)^3=(6+1)^3$$

= $$(7)^3=343$$

=> Ans - (D)

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