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(07.07) the product of (a − b)(a − b) is a perfect square trinomial. select one: a. sometimes b. always c. never

  b. Always

Step-by-step explanation:

  (a -b)(a -b) is the product of the binomial (a -b) with itself, so it is a perfect square. The expanded version of this product is the "perfect square trinomial" ...

  a² -2ab +b²

This trinomial is always the product of (a -b)².

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: h

step-by-step explanation: