Add or subtract.
(5x^2+x-3)-(-2x^3+4)
A: -2x^3+5x^2+x+7
B: -2x^3+5x^2+x+1
C: 2x^3+5x^2+x=7
D: 2x^3+5x^2+x+1
B: -2x^3+5x^2+x+1
To add or subtract the given expressions, we need to combine like terms.
The expression we need to evaluate is: (5x^2 + x - 3) - (-2x^3 + 4)
First, we distribute the negative sign to the terms inside the parentheses that follow it:
(5x^2 + x - 3) + (2x^3 - 4)
Next, we group the like terms together:
2x^3 + 5x^2 + x - 4 - 3
Simplifying further, we have:
2x^3 + 5x^2 + x - 7
So, the correct answer is option A: -2x^3 + 5x^2 + x + 7.