Evaluate 27x²-42x+12 and the equivalent expression that you wrote in problem 7 for x=2.

Solution:

Given that,

We have to evaluate for x = 2

To evaulate for x = 2, plug in x is equal to 2 in given expression and solve

Substitute x = 2 in given expression

Thus the given expression is evaluated for x = 2 and solution is 36

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:

1. 34

2. 268

3. x=14.4

step-by-step explanation: