Answers

  • Brainly User
2014-05-19T11:32:16+05:30

This Is a Certified Answer

×
Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
If there is any equation of the format ax^2+bx+c=0 then you can use the formula 

x=(-b + √ b^2-4ac)/2a or (-b -√ b^2-4ac)/2a to find the roots of the quadratic equation.
0
2014-05-19T12:45:12+05:30
There many ways to solve a quadratic equation.
1. Try to find factors of Left hand side and equate each to zero, to get the solution. Splitting of terms is commonly used for this method.
Ex.
 x^{2} +4x+4=04x
must be splitted in such a way the product of the splitted terms is equal to the product of the coefficient of  x^{2} and constant term.
Therefore,  x^{2} +(2x+2x)+4=0
x(x+2)+2(x+2)=0
(x+2)(x+2)=0
On equating the factors to zero we get,
x=-2,-2
2. You can use quadatric formula.
For equation of form,
ax^2+bx+c=0x=
x= \frac{-b \frac{+}{-} \sqrt{b^{2}-4ac } }{2a}
0