Question

Guys I really need help finding factors of 66 that add up to 15. I need two

Answer 1

Theres no such combination

Answer 2

Are you doing simplifying quadratics?

Answer 3

sort of

Answer 4

Im trying to solve \[\sqrt{x-7 } + 8 = x\]

Answer 5

not 7 but 2

Answer 6

so far ive gotten t0 -2 = x^2+ 15x + 66

Answer 7

Ah
First subtract 8
Then square to remove the sqrt
Youll get
Then add 2 and subtract x to give a quadratic on 1 side and 0 on the other.
Last you would solve. Just use the quadratic formula
Youll get 2 values of x, plug in each to ensure it isnt extraneous

Answer 8

you must square both sides of the eqation.

Answer 9

I did all that. heres my steps below:
\[\sqrt{x-2} = x+8\]
x-2 = (x + 8) (x+8)
x-2 (x^2 + 8x + 8x + 64

Answer 10

-2 = x^2 + 15 + 64

Answer 11

0 = x^2 + 15x + 66

Answer 12

Yeah so use the quadratic formula..do you know how to do it?

Answer 13

I know the formula ax^2 + bx + c = 0

Answer 14

but I need to factor the formula and to do that I must find two factors that ad up to the middle term

Answer 15

of the third term