Question

4x^3 + 5x^2= 2x^3 + 9x^2

Answer 1

${4x}^{3} + {5x}^{2} - {2x}^{3} - 9 {x}^{2} = 0 \\ {2x}^{3} - 4 {x}^{2} = 0$
hence x=0 or x=2

Answer 2

4X3+ 5X2=2X3+9X2
4X3-2X3=-5X2+9X2
2X3=4X2
X=4X2/2X2
X=2
2 IS YOUR ANSWER.......