subtract (3r^4+4r^3)-(r^4-5r^3)
To subtract the given expressions, we need to distribute the negative sign to each term inside the parentheses of the second expression.
So, we have:
(3r^4 + 4r^3) - (r^4 - 5r^3)
Simplifying, we can combine like terms:
= 3r^4 + 4r^3 - r^4 + 5r^3
Now, we can combine the terms with the same exponent:
= (3r^4 - r^4) + (4r^3 + 5r^3)
Simplifying further, we get:
= 2r^4 + 9r^3
Therefore, the subtracted expression is 2r^4 + 9r^3.