Solve x2 – 4 = 77. x=square root of 73 or x= -square root of 73 x = 9 or x = -9 x = 11 or x = -7 x = 9i or x = -9i

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:

well there are two answers for that.

1: you need 120 ones then that will equal up to 120.

2: you could also do one 100 and 2 tens.

those are the answers that i have thought of.

they are simplified

step-by-step explanation: