Question

Write the quadratic formula: 1. 3x^2 - 4x - 5 = 0

Answer 1

We have the next quadratic equation

$3x^2-4x-5=0$

where

a=3

b=-4

c=-5

the quadratic formula is

$x_{1,2}=\frac{-b\pm\sqrt[]{b^2-4ac}}{2a}$

we substitute the values

$x_{1,2}=\frac{-(-4)\pm\sqrt[]{(-4)^2-4(3)(-5)}}{2(3)}$