If x^2=x+3, then x^3=? Answers
A) 3x+2	B) 3x-2	C) 4x+3	D) 2x-3	E) 3x+4
Given X^2 = X+3   X^3 = X*X^2 = x*(X+3)-- Substituted from above.   = X^2 + 3X = X+3+3X = 4X+3.   Hence 4x+3.
<result>C</result>
If x^2=x+3, then x^3=?