Ilooked at a video about dividing by zero, but i dont understand this question. couldnt x=-4 also be undefined? (explain in detail)

x = -4 is not undefined because f(x) = x+4 is in the top part, the numerator, not the denominator. So the value that makes f(x) = x + 4 zero does not result in a division by zero.

Indeed, if we try to evaluate (f/g)(-4), then we get

which does not involve a division by zero.

However, attempting to evaluate (f/g)(3) leads us to

which involves a division by zero, and divisions by zero are undefined

it has changed from the width and the height.

step-by-step explanation:

x = -4

step-by-step explanation:

- 20 - 4(x + 3) = 4x

=> -20 - 4x - 12 = 4x

=> - 32 -4x = 4x

=> -32 = 4x + 4x

=> - 32 = 8x

=> -32/8 = x

=> -4 = x