Step-by-step explanation:
the last one
x^2+2x+1 R(-5)
Answer:
12/46
x² + 4x - 9
= (x + 2)² - 13
a = 2, b = -13.
Answer: yes
We know a or b != 0
but a-b==0 so both are the same unknown number
b/a must = 1
so
a/b is equivalent to b/a as a/b=1 as well.
So the last answer choice.