Question

simplify each of the following (i) $(x+3)x^{2} + (x-3)x^{2}$

Answer 1

Answer:

$\left(x+3\right)x^2+\left(x-3\right)x^2$

$x^2\left(x+3\right)+x^2\left(x-3\right)$

$x^3+3x^2+x^3-3x^2$

$2x^3$

Answer 2

Answer:

$(x + 3) {x}^{2} + (x - 3) {x}^{2} \\ {x}^{3} + {3x}^{2} + {x}^{3} - {3x}^{2} \\ {2x}^{3}$