Question

Addition of the two polynomials $2x^3-3x^2$ and$-5x^3-8x^2$ is .

• A. $3x^3-11x^2$
• B. $-3x^3+11x^2$
• C. $-3x^3-11x^2$

Answer 1

Answer: (B), (C)

The correct options are
B $-3x^3+11x^2$
C $-3x^3-11x^2$

Given:
$2x^3-3x^2$ and$-5x^3-8x^2$
First, we have to arrange the like terms together and then add.
$\Rightarrow 2x^3-5x^3-3x^2-8x^2$
$\Rightarrow -3x^3-11x^2$

Thus, the sum of $2x^3-3x^2$ and$-5x^3-8x^2$ is$-3x^3-11x^2$.