Discriminant of 9x² + 2 = 10x is 28

Solution:

Discriminant of a quadratic equation ax² + bx + c is

=> b² – 4ac

Given equation is 9x² + 2 = 10x

Moving 10x to the left we get

=> 9x² – 10x + 2 = 0

Comparing with general form of equation

=> a = 9, b = -10, c=2;

Substituting into the discriminant formula, we get

=> (-10)² – 4(9)(2)

=> 100 – 72

=> 28

So, the discriminant of 9x² + 2 = 10x is 28

• This reply was modified 2 years ago by ProtonsTalk.