Friday

December 19, 2014

December 19, 2014

Posted by **Jo** on Monday, July 12, 2010 at 6:35am.

Calculate the discriminant of the quadratic expression

2x 2 + 5x − 2.

- Maths -
**Reiny**, Monday, July 12, 2010 at 6:45amUsually the discriminant is associated with a quadratic equation.

I will assume you meant 2x^2 + 5x - 2 = 0

Discriminant = b^2 - 4ac

= 25 - 4(2)(-2)

= 41

**Answer this Question**

**Related Questions**

maths - I'm stuck here don't have a clue what to do. I've read all my school ...

maths - I am trying to understand what to do here.. need help asap!! Thanks! M ...

maths - Suppose that y is directly proportional to x. If y = 10 when...

maths - A ball is launched into the air from below a cliff. after t seconds its ...

chem - The following equilibrium pressures were observed at a certain ...

maths - If a van travels for a distance of 18 km at an average speed of 75...

maths - If a car travels for a distance of 16 km at an average speed of 50...

maths - I've put what i think are the answers at the bottom. Consider the ...

Maths - Evaluate the following expression when a = 7 and b =&#...

maths - The mass of a particular substance is known to grow exponentially at a ...