Question

What is the excluded value?

2x/1-2x

A. 0
B. 1/2
C. 1

Answer 1

And...

What are the excluded values?

\[\frac{ -7 }{ x^2-2x-15 }\]


0 and 15
3 and -5
-3 and 5

Answer 2

find the value of x for which denominator is zero

Answer 3

1. B
But I can't find the answer for the second problem. I have...
A = -45
B = 4
C = -34
@surjithayer

Answer 4

\[x ^{2}-2x-15=0\]
2=5-3
5*-3=-15
\[x^2-(5-3)x-15=0\]
\[x^2-5x+3x-15=0 \]
make factors and find values of x

Answer 5

I'm lost

Answer 6

x=-3 or x=5 put in equation will=0 can't divide by zero