(x+6)(x-4)
multiply using the distributive property

the answer is x^2+2x-24

steps-

(x+6)(x-4); x(x)+x(-4)     6(x)+6(-4)

(x^2-4x)+(6x-24)

x^2+2x-24

5104.38 inches

step-by-step explanation:

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: