Completing the square: Which of the following is a solution x^2 + 14x + 112 = 0? If necessary round to the nearest hundredth.

Question

x= -0.24
x= -4.24
x= 4.24
no solution

I worked it and got neither of the answers. I got x= 0.9 and x=-14.9. Where did I go wrong? Thanks

Answer 1

Need to factor end terms so the factors will sum to the middle term. I see no solution.

112 = 2 * 2 * 2 * 2 * 7

I don't know how you got your answers, since .9 * 14.9 = 13.1. Also x would not be positive, since the end term is positive. It would have to be (x+?)(x+?) = 0. That would lead both values of x to be negative.

Do you have typos in your post?

Answer 2

c
b
d
b

Answer 3

1.C. 30.25
2.B. -1
3.D. no solution
4.B. 8 in
Connexus academy algebra 1

Answer 4

Yes they are both correct

Answer 5

mine had mixed up answeres so i just matched whichever answer was on each slide to the one apple posted and i got 100

Answer 6

Apple still correct