It p(x) = x2 - 1 and 0(x) - 5(x-1), which expression is equivalent to (0-2)(x)?
5(x - 1) - x2 - 1
(5x - 1) - (x2 - 1)
(x2 - 1) - 5(x - 1)
(x2 - 1) - 5x - 1

(x2 - 1) - 5x - 1

Step-by-step explanation:

the sum of all the angles in a triangle are equal to 180

so you can add   the 3 given angles together to equal 180:

5y + 2y + 2y = 180

or since all three angles have the same letter, combine the 3 angles to equal 180:

9y = 180