Question

please help, im so lost
add.
9x^6-9x^5+2x^4+9
8x^6+2x^5+5x^4+7
_______________________

Answer 1

17x^6-7x^5+7x^4+16

Answer 2

just do the apples with apples and oranges with oranges
I.E: 9x^6+8x^6=17x^6

Answer 3

give it a try

Answer 4

11x^10

Answer 5

when adding you are only allowed to do it this way

Answer 6

is that right

Answer 7

when multiplying you just add the exponents.

Answer 8

can you help me with the next one its subtraction?

Answer 9

ok what is it?

Answer 10

13a^5+19a^3
5a^5+11a^3
______________

Answer 11

o.k, look at the ones with the same exponents.

Answer 12

I.E 13A^5 and 5A^5

Answer 13

8a?

Answer 14

notice since these two have the same exponents, you can subtract them.

Answer 15

bingo!!!

Answer 16

but you are missing the exponents...

Answer 17

5-5 is 0

Answer 18

so it would be 8a^5

Answer 19

when you are dealing with addition or subtraction you keep the number of exponents.

Answer 20

so if it was 3 and 5 i would add or subtract?

Answer 21

so 3x^2-2x^2 would be : x^2

Answer 22

so the answer is 8a^5 +8a^3?

Answer 23

remember to look at the exponent, if the terms have the same number of exponents than you can do the operation.

Answer 24

yup.

Answer 25

awesome thank you so so much :)

Answer 26

this only applies when you are adding or subtracting.

Answer 27

no problem.