Question

2x2 + x - 4 = 0 how many solutions are there

Answer 1

Us the discriminant of the quadratic formula.
b^2 - 4ac is the discriminant.
In 2x^2 + x - 4 = 0, a = 2, b = 1, and c = -4
b^2 - 4ac = 1^2 - 4(2)(-4) = 1 + 32 = 33

If the discriminant is positive, there are two real roots.
If the discriminant is zero, there is one real root.
If the discriminant is negative, there are two negative roots.

Answer 2

so there two reals roots...i got 33 to

Answer 3

Right, since the discriminant is a positive number, there are two different real roots.