What is the sum of the polynomials?
(7x3 – 4x2) + (2x3 – 4x2)
a)5x3
b)9x3
c)5x3 – 8x2
d)9x3 – 8x2

If you have to find the sum of the polynomials , then you have:

1. group all terms that have equal degrees

.

2. Add the coefficients near terms of equal degree

7+2=9,

-4-4=-8.

3. Write the sum as .

correct choice is D.

pay attention in your classes and concentrate the best thing you can do to raise your test scores is to pay attention when you're supposed to be learning the material: in class!

take good notes.

do your homework.

use mnemonics and other tricks.

do practice tests.

note: the best i know.

150.6

all i did was i multiplied 5.02 by 30