Question

Which of the following is a solution of x^2 + 2x + 4?

−2 + two i times the square root of 3
2 + two i times the square root of 3
1 − i times the square root of 3
−1 + i times the square root of 3

Answer 1

@Nnesha can you help?

Answer 2

what's the quadratic formula ?

Answer 3

y=mx+b @Nnesha

Answer 4

no that's the linear equation i'm talking about `quadratic formula `

Answer 5

x^2+2x+4 is a parabola not linear equation
the highest degree `^2` makes it quadratic equation

Answer 6

so what do I do? @Nnesha

Answer 7

\[\large\rm x=\frac{ -b \pm \sqrt{b^2-4ac} }{ 2a }\] quadratic formula should be in ur notes
where A =leading coefficient
b=coefficient of x term
c=constant term
plugin a , b ,c values \[\rm Ax^2+Bx+C=0\]

Answer 8

so 2 + 2i- sqrt 3 @Nnesha

Answer 9

how did you get that show ur work
what are a b c values ?

Answer 10

2 and 4 are b and c @Nnesha

Answer 11

what did you plugin for a ?? :=))

Answer 12

2 @Nnesha

Answer 13

no the equation is 1x^2+2x+4
what's a ?
and post your work how did you get that answer

Answer 14

i just guessed @Nnesha

Answer 15

don't guess it
substitute a and b c for their values
first tell me
a= ?
b=?
c=?

Answer 16

a is 1 b is 2 c is 4 @Nnesha

Answer 17

substitute a for 1 b for 2 andc for 4

Answer 18

oh I was right! @Nnesha