Question

Gonna need even more help(god i suck at math)

1.http://prntscr.com/iuytid
2.http://prntscr.com/iuyuns
3.http://prntscr.com/iuyuw9
4.http://prntscr.com/iuyv35
5.http://prntscr.com/iuyw1l

Answer 1

i would post more questions after this thread but unfortunately im doing the rest of the 20 questions

Answer 2

Oh boy for the first one it says to add both functions
\((7x^3-2x-12)+(-3x^3-8x^2+10x)\)
Combine like terms

Answer 3

i got 7x^3-8x^2+8x-39

Answer 4

Not quite, make sure to only combine the numbers of same exponents

Answer 5

soo C(so its 4x^3-8x^2+8x-12

Answer 6

whowhoops, idk what i was typing there at the begining, but ignore that part

Answer 7

in other words its B for the first part @dude

Answer 8

for question 2 i think its C

Answer 9

The first one is B

Answer 10

Yes the second one is C

Answer 11

ok now for the third one

Answer 12

you want to have the whole equation on one side, do you have an idea on how to do this?

Answer 13

to be honest, no

Answer 14

Oh you're solving using the completing the square, mind what I had said
You want to have the equation such that
\(x^2+2ax+a^2=(x+a)^2\)

Answer 15

x^2+18x+81=125

Answer 16

i already did 4 so lets move onto 5

Answer 17

question 5 is only needed now