Question

ok, Find the difference.

(6x3 + 18x2) - 3x2 =

A. 21x2B. 21x3C. 3x3 + 15x2D. 6x3 + 15x2

Answer 1

Same thing as the last question

6x^3 + 18x^2 -3x^2 just think of what is 18-3?

Answer 2

i think its b but what do i know haha its b or a

Answer 3

its 15 so never mind! haha its c or d?

Answer 4

the x^3 stays the same.

Answer 5

x factors are only affected by ones with the same exponent.

x^2 + x^3 != 2x^2 or 2x^3 it's still x^2 + x^3

For example, lets say x = 2

2^2 + 2^3 wouldn't be what I mentioned above, it would be 4 + 8

If it was 2x^2 then it would be 2*4 which is 8
and 2x^3 would be 8 * 2 which is 16.

Answer 6

is it d?

Answer 7

yes.

Answer 8

sweet! haha thank you

Answer 9

yup