![]() An example of quadratic equation is 3x 2 + 2x + 1. Moreover, the standard quadratic equation is ax 2 + bx + c, where a, b, and c are just numbers and ‘a’ cannot be 0. In this formula, a, b, and c are number they are the numerical coefficient of the quadratic equation and ‘a’ is not zero a 0.Īnswer: Simply, a quadratic equation is an equation of degree 2, mean that the highest exponent of this function is 2. Question 5: What is the formula for solving quadratic equation?Īnswer: The general quadratic equation formula is “ax 2 + bx + c”. Hence, from the quadratic formula, we have: Question 4: Find the value of x: 27 x 2 − 12 = 0Ī) 2/3 B) ± 2/3 C) Ambiguous D) None of theseĪnswer : B) Here, a = 27, b = 0 and c = -12. Therefore, x = − 1 More Solved Examples For You The below image illustrates the best use of a quadratic equation.ĭiscriminant = b 2 − 4ac = 22 − 4×1×1 = 0 The quantity in the square root is called the discriminant or D. Just plug in the values of a, b and c, and do the calculations. We define it as follows: If ax 2 + bx + c = 0 is a quadratic equation, then the value of x is given by the following formula: This is the general quadratic equation formula. A method that will work for every quadratic equation. For such equations, a more powerful method is required. ![]() There are equations that can’t be reduced using the above two methods. This is known as the method of completing the squares.
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