Question

12. The quadratic equation x² +15|x] +14 = 0 has
(A) only positive solution
(B) only negitive solution
(C) no solution
(D) both positive solution and negative solution​

Answer 1

Answer:

d

Step-by-step explanation:

It can be broken into two equation .

1. One can have all positive

2. Second can have one negative (-15)

Answer 2

Step-by-step explanation:

this equation could have only positive solution .

prove:

x^2 + 15|x| + 14 = 0

when we taken out any no. or variable from Mode| | then it becomes negative .

thus obtained equation is

x^2 - 15x + 14 = 0

x^2 - 1x - 14x + 14 =0

x(x - 1) - 14(x - 1) = 0

(x - 1) (x - 14) = 0

x = 1,14

hence, option (A) is correct (hope so)