I assume you meant -5x+20? If so,
-5(x-4) = 0 This is the answer
x = 4
the anwer to -5 + 20 = 15
Answer:
z=2
Step-by-step explanation:
60=-5(-6-3z)
60= 30+15z
60-30=15z
30/15=15z/15
2=z
hope this helps you
x + 7
x^2 + 4x − 21 =
= (x + 7)(x - 3)
x^2 + 11x + 28 =
= (x + 4)(x + 7)
Answer: x + 7