Question

What is the sum of (2x2 + 5x -3) and (-3x2 -10 + x2)

Answer 1

Question: what is the sum of (2x^2 + 5x -3) and (-3x^2 -10 + x2)​: that is the sum of

`(2x^2+5x-3)and(-3x^2-10+x^2\text{)}`

Solution:

We want to know:

`S=(2x^2+5x-3)+(-3x^2-10+x^2\text{)}`

we put together similar terms:

`S=(2x^2-3x^2+x^2)\text{ + (5x) + (-3-10)}`

Now, we add the coefficients of each variable:

`S=(0x^2)\text{ + (5x) + (-13)}`

that is equivalent to say

`S=\text{5x -13}`

Then the sum is

`S=\text{5x -13}`