Question

Determine the number and type of solutions for 5x^2 + 1x + 7 = 0.

1 Rational Double

2 Irrational

2 Rational

2 Complex

Answer 1

And the discriminant is ....

Answer 2

You need to calculate the discriminant because:
1. If the discriminant is negative there are 2 complex solutions
2. If the discriminant is 0 there is 1 rational solution
3. If the discriminant is positive: a) and a perfect square there are two rational solutions
b) and not a perfect square there are two irrational solutions.

Answer 3

So it is a or b

Answer 4

What is the discriminant?

Answer 5

I do not know? I am sorry.

Answer 6

b^2-4ac
Calculate it.

Answer 7

Ok thank you.

Answer 8

What did you get for the discriminant?