Question

How to solve using the quadratic formula. & answer.

Answer 1

Quadratic formula

for the equation
ax^2+bx+c=0
x=$\frac{-b+/- \sqrt{b^{2}-4ac} }{2a}$

we are given
x^2-4x+3=0
we don't need to use quadratc formula, we just factor into
(x-3)(x-1)=0
x=3 and 1
but if you want to use quadratic, ok

x^2-4x+3=0
a=1
b=-4
c=3
input
x=$\frac{-(-4)+/- \sqrt{(-4)^{2}-4(1)(3)} }{2(1)}$
x=$\frac{4+/- \sqrt{16-12} }{2}$
x=$\frac{4+/- \sqrt{4} }{2}$
x=$\frac{4+/- 2}{2}$
x=2+/-1
x=2+1 or 2-1
x=3 or 1