Simplify the rational expression. state any excluded values.

x^2-3x-10/x+2

answer:

the answer to your question is   x - 5 or x = 5

step-by-step explanation:

1.- factor the numerator

                                        x² - 3x - 10

    find 2 numbers that added equal -3 and multiply equal -10.

    these numbers are -5 and + 2

                                      (x - 5)(x + 2)

2.- simplify

delete (x +2) in both numerator and denominator

3.- result                       x - 5

                                      x = 5

answer:

y = -4

step-by-step explanation:

so if x equals 6 then you need to substitute it into the equation

4(6) + y = 20

then simplify

24 + y = 20

then subtract 24 from both sides

y = -4