Strictly speaking, x^2 + 2x + 4 doesn't have solutions; if you want solutions, you must equate <span>x^2 + 2x + 4 to zero:
</span>x^2 + 2x + 4= 0. "Completing the square" seems to be the easiest way to go here:
rewrite x^2 + 2x + 4 as x^2 + 2x + 1^2 - 1^2 = -4, or
(x+1)^2 = -3
or x+1 =i*(plus or minus sqrt(3))
or x = -1 plus or minus i*sqrt(3)
This problem, like any other quadratic equation, has two roots. Note that the fourth possible answer constitutes one part of the two part solution found above.
Answer:
6,true 7,false 8,false 9,true 10,true
Step-by-step explanation:
The answer is 8 .. hope this helps a lot :)
Answer:
Colin walked 2.5 miles every hour
Step-by-step explanation:
The answer is 2.5 because 15 divided by 6 is 2.5
P.S Can I have brainliest?
Answer:
proved
Step-by-step explanation:
plz mark me brainliest
