Question

Solve x2 + 8x = –3

Answer 1

ok but that isnt one of my choicces

Answer 2

did you mean x2 + 8x = 3
same as 2x + 8x = 3
x = 3/10

Answer 3

or did you mean x^2 + 8x = 3 (x^2 means x to the power of 2)
x = {0.358898944, -8.358898944}

Answer 4

choices are:
a.x=-8+-sqrt72/2
b.x=8+-sqrt52/2
c.x=4+-sqrt13
d.x-4+-sqrt13

Answer 5

@mathstudent55

Answer 6

@jim_thompson5910

Answer 7

do you know how you could find Delta ?

Answer 8

no

Answer 9

the correct answer is d but let see why

Answer 10

let assume a parametric equation : ax^2+bx+c=0
Dekta=sqrt(b^2-4ac)
x=(-b+-sqrt(Delta))/2a

Answer 11

I think it's better to memories these formula.
In your equation a=1 b=8 c=3
I guess you get it now

Answer 12

yes i do thank you my math teacher refuses to help me she tells me to figure it out on my own and i was completely lost but i see how to do it

Answer 13

can you please check to see if i got the correct answer on another problem