Question

9/8x²+2x-15 - 5/2x³+3x + 4/4x²-5x​

Answer 1

`-(5)/(2) x^(3) +(17)/(8) x^(2) -15`

Explanation:

First combine like terms so for numbers with x^3 you have one:

-
`(5)/(2) x^(3)`

Then x^ 2

`(9)/(8)x^(2) +x^(2)`

(4/4x^2 is just x^2 because 4/4 is 1)

So

`(17)/(8) x^(2)`

Then all numbers with x cancel out because

2x+3x-5x is 0.

Then you just have -15.

So put them back together to get what I wrote in the answer.

Hope that helps lmk if I calculated that wrong!