This one is so easy that your brain refuses to accept it.
It's looking for a harder answer, but can't find it !
You're totally correct, as far you went. x² + 2x does = -1
Now add ' 1 ' to each side: x² + 2x + 1 = 0
Can you factor that quadratic ?
Can you mash it through the quadratic formula ?
Actually, it's the simplest possible perfect square.
x² + 2x + 1 = (x + 1)²
So the solutions of x² + 2x + 1 = 0 are both x = -1 .
Don't say anything.
I know it's embarrassing.
Answer:
1421 minutes
Step-by-step explanation:
(84.48-28)/.04=M
84.48-28=56.48
56.48/.04=1421
Answer:
-0.1846
Step-by-step explanation:
-5/13 + 1/5 = -0.1846
Answer:
a
Step-by-step explanation:
I'm not at my desk and can't check it out right now.
But I think you should try 10 and -42 .