Question

Solve by formula method 3x2 + 5x – 9 = 0​

Answer 1

Solution:-

The quadratic equation is:- 3x² + 5x -9 = 0

The formula is:- -b±√b²-4ac / 2a

Here, a = 3, b = 5 and c = -9

So, plugging in the respective values, we get,

⇒ -5±√5²-4(3)(-9) / 2(3)

⇒ 25±√25+108 / 6

⇒ 25+√133 / 6        

⇒ Solving further we get :- 26.92

Answer:- The value of the Quadratic Equation is 26.92