QUADRATIC EQUATIONS AND INEQUATIONS math capsule
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QUADRATIC EQUATION If P(x) is a quadratic polynomial written in descending order of their degrees , then P(x) = 0 is called a quadratic equation. The general form of a quadratic equation is ax²+bx+c = 0 where a, b and c are real numbers and a ≠ 0. ROOTS OF A QUADRATIC EQUATION A real number ɑ is said to be a root of the quadratic equation ax²+bx+c = 0 and a ≠ 0 , if a aɑ²+bɑ+c = 0. We can also say that x = ɑ is a solution of the quadratic equation.e.g. The quadratic equation is x² - 6x + 8 = 0 If x =2 then 2² - 6(2) + 8 = 0 so x =2 is root of quadratic equation.