Question

Evaluate -9(x – (-1)) ÷ 6 – x2 for x = -1. Please show all of your work.

Answer 1

-9(x – (-1)) ÷ 6 – x^(2) ?
=
-9(x – (-1))/(6 – x^(2))

distribute the -9, remember -(-) = +

Answer 2

It's 0. -1 for x makes everything in the numerator equal zero. Regardless of the denominator, your answer is zero.

Answer 3

ok im confused

Answer 4

In the numerator, you get 9*(-1 - (-1)). -1 - (-1) is zero. 9 times zero is zero. Zero divided by anything is zero.

Answer 5

-9(x – (-1))
=
-9(x + 1))
sub in
x= -1

-9(-1 + 1)
=
-9(0)
=
0

whenever you have a numerator of 0 the answer is 0

unless it is 0/0 then it is undefined, you cannot divide by zero

Answer 6

cuddlepony explained it better

Answer 7

thank you both

Answer 8

i got it now

Answer 9

You're welcome

Answer 10

0 = (1 + x)/2
notice when I try to find the roots for this
0*2 = ((1+x)/2)*2
0 = 1 + x

Therefore it doesn't matter what is on the denominator, the root is always dependent on the numerator