Question

Find the sum: (3x2 + 5x − 8) + (5x2 − 13x − 5)

a. 8x2 + 8x − 13
b. 8x2 − 8x + 13
c. 8x2 − 8x − 13
d. 8x2 − x − 13

Answer 1

The given expressions are
`3x^(2)+5x-8` and
`5x^(2)-13x-5`

We have to find the sum of the given expressions,

`(3x^(2)+5x-8)+(5x^(2)-13x-5)`

Combining the like terms of both the expressions, we get

`(3x^(2)+5x^(2))+(5x-13x)+(-8-5)`

=
`8x^(2)-8x-13`.