How many, and what type of solutions does 2x^2 + 11x +15 =0 have?
a.) 2 irrational solutions
b.) 2 nonreal solutions
c.) 1 rational solutions
d.) 2 rational solutions

Respuesta :

The answer is d.) 2 rational soultions
Riia

THe given equation is

[tex] 2x^2 +11x + 15 =0 [/tex]

TO find the number and type of solutions, we have to check out the discriminant, whose formula is

[tex] D = b^2 -4ac [/tex]

In the given equation, values of a,b,c are 2,11,15 respectively .

Substituting the values of a,b and c in the formula of discriminant, we will get

[tex] D = 11^2 - 4(2)(15) = 121-120 = 1 [/tex]

Since the value of D is positive, so we have 2 rational solutions .

And the correct option is d .