Question

subtract the polynomials. simplify, if possible.
4x^3-(-x^3 - 12)=square

Explanation:

Step1: Remove the parentheses

When we have a negative sign in front of parentheses like $-( -x^{3}-12)$, we change the sign of each term inside the parentheses. So $4x^{3}-(-x^{3}-12)=4x^{3}+x^{3}+12$.

Step2: Combine like - terms

The terms $4x^{3}$ and $x^{3}$ are like - terms. We add their coefficients. $(4 + 1)x^{3}+12=5x^{3}+12$.

Answer:

$5x^{3}+12$