Determine what values makes this rational expression undefined x+1/x^2+2x-24

The expression ...

... (x+1)/(x²+2x-24)

will have a zero denominator when

... x² +2x -24 = 0

... (x +6)(x -4) = 0 . . . . . factored form

... x = -6, x = 4 . . . . . . . values of x that make the factors zero

The rational expression will be undefined when x = -6 or x = 4.

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.

step-by-step explanation:

for volume, add base x height x width