Question

1. What is the solution of n² – 49 = 0? (1 point)

Answer 1

+7,-7

Answer 2

A.–7
B.7
C.±7 those the choices they gave me to choose
D.no solution

Answer 3

Okay, you need to factor first. (n+7)(n-7) = 0

If you set n+7=0, you'll get n=-7

(-7+7)(-7-7) = 0
0(-14) = 0

Now set n-7=0
n=7

(7+7)*(7-7) = 0
14*(0) = 0

So your solutions are n=-7, 7

Answer 4

so the answer will be a. -7 ?

Answer 5

No, C. +/-7

Answer 6

Really look over my explanation and it will make sense.

Answer 7

ok

Answer 8

Just think about it this way... zero * (some crap) = 0, and (some crap)*zero = 0. That's why there are 2 solutions in this case.