contestada

find the zeros of the quadratic equation f(x)= 6x²-3, and verify the relation between its zeros and coefficients.
using the formula
alpha+beta= -b/a
alpha × beta = c/a​

Respuesta :

Answer:

Step-by-step explanation:

We are already given the following formulas :-

[tex]\blue{\alpha + \beta = \dfrac{-b}{a}}[/tex]

[tex]\red{\alpha \times \beta = \dfrac{c}{a}}[/tex]

Given that the polynomial is :-

[tex]\sf{6x^2 + 0x - 3}[/tex]

Now, we will use factorisation as our first weapon :-

6x² -3 = 0 [As we have to find the zeroes of the equation]

6x² = 3

x² = [tex]\dfrac{3}{6}[/tex]

x² = [tex]\dfrac{1}{2}[/tex]

x = [tex]\dfrac{1}{\sqrt{2}}[/tex]

Now, we can take one zero as 1/Root 2 and other -1/root 2

[tex]\dfrac{1}{\sqrt{2}} + \dfrac{-1}{\sqrt{2}} | \dfrac{0}{6} = 0[/tex]

0 |0 Hence verified.

[tex]\dfrac{1}{\sqrt{2}} \times \dfrac{-1}{\sqrt{2}} | \dfrac{-3}{6} = 0[/tex]

[tex]\dfrac{1}{2} | \dfrac{1}{2}[/tex]

Hence, proved.