Q. For the following quadratic equation, find the discriminant.x2−12x+70=0Answer:
Identify coefficients: Identify the coefficients of the quadratic equation.The standard form of a quadratic equation is ax2+bx+c=0. In the given equation, x2−12x+70=0, the coefficients are:a = 1 (coefficient of x2)b = −12 (coefficient of x)c = 70 (constant term)
Recall discriminant formula: Recall the formula for the discriminant of a quadratic equation. The discriminant of a quadratic equation ax2+bx+c=0 is given by the formula D=b2−4ac.
Substitute coefficients: Substitute the identified coefficients into the discriminant formula.Using the values of a, b, and c from Step 1, we get:D=(−12)2−4(1)(70)
Calculate discriminant: Calculate the discriminant.D=144−4(70)D=144−280D=−136
More problems from Solve exponential equations by rewriting the base