Question

(5x^4-3x^3+2)-(-3x^4+2x^2-5)

Answer 1

$▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪$

Here's the solution :

• $({5x}^{4} - 3 {x}^{3} + 2) - ( - 3 {x}^{4} + 2 {x}^{2} - 5)$

• $5 {x}^{4} - 3 {x}^{3} + 2 + 3 {x}^{4} - 2 {x}^{2} + 5$

• $8 {x}^{4} - 3 {x}^{3} - 2 {x}^{2} + 7$

Answer 2

Answer:

8$x^{4}$-3$x^{3}$-2$x^{2}$+7

Step-by-step explanation:

The first thing to do in this problem is distribute the negative in front of ($-3x^4+2x^2-5$). This makes it $3x^4-2x^2+5$.

From here you can remove the parenthesis and combine like terms. 5$x^{4}$ combines with 3$x^{4}$ to get 8$x^{4}$ and 2 and 5 combine to get 7. The -3$x^{3}$ and -2$x^{2}$ cannot combine with anything since they don't share any like terms.

Using the combinations, bring all of the terms back together and you get 8$x^{4}$-3$x^{3}$-2$x^{2}$+7