4x^2-4x-8=0 Divide by 4: x^2-x-2=0 Factor: (x- 2) (x + 1) = 0 x-2 = 0 or x + 1 = 0

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

answer: 1, 3 and 5 are correct

step-by-step explanation:

the answer is a if my teacher taught me correct

noncoplanar points are points that do not lie on the same line.