Answer:
it's 5.5
Step-by-step explanation:
Elimination is getting rid of one of the variables the answer is (-6,-7)
Answer:
what kind of homework your teacher giving you
X^2 + 20x + 13 = 0
x^2 + 20x = -13
(B/2)^2 = (20/2)^2 = 10^2 = 100
x^2 + 20x + 100 = -13 + 100
(x + 10)^2 = 87