Question

x(-3)^4=9(-3)^2-5

Answer 1

81x=81-5
81x=76
x=76/81
x=.938

Answer 2

Sorry that is supposed to be a + between the ^4 and the 9

Answer 3

so x+9(-3)^4=9+9-3)^2-5?

Answer 4

Yes

Answer 5

no

Answer 6

x+(-3)^4=9+9-3)^2-5?

Answer 7

Dang it is x(-3)^4+9(-3)^2-5

Answer 8

I got 81x+76 but it says I'm wrong

Answer 9

wait so i need to simplified the equation instead of solving it?

Answer 10

yes

Answer 11

that should be right? are u doing mathxl or what?

Answer 12

MyMathLab

Answer 13

f(-3)=x^4+x^2-5

Answer 14

check the example and see how they write the answer or do it wrong and lei it show you the right answer and click similar exercise and do it again(that is what I do when I get the right answer but mathxl told me that I was wrong)

Answer 15

f(-3)=x^4+9x^2-5 I just can't get my fingers to type right

Answer 16

Ok thank you

Answer 17

so for f(-3)=x^4+9x^2-5
it will be (-3)^4+9(-3)^2-5
81+81-5
157

Answer 18

that should be right

Answer 19

Thank you, that is the answer it gave.

Answer 20

Where am I going wrong?

Answer 21

you got 81x+76 and you should get rid of the x then it will be 81+76=156