Solve using the quadratic formula.2q2+4q+2=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.q=_____ or q=_____
Q. Solve using the quadratic formula.2q2+4q+2=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.q=_____ or q=_____
Quadratic Formula Definition: The quadratic formula is given by q=2a−b±b2−4ac, where a, b, and c are the coefficients of the quadratic equationax2+bx+c=0. In this case, a=2, b=4, and c=2.
Calculate Discriminant: First, calculate the discriminant, which is the part under the square root in the quadratic formula: b2−4ac. For our equation, the discriminant is 42−4(2)(2).
Discriminant Result: Perform the calculation: 16−16=0. The discriminant is 0, which means there will be one real solution (since the discriminant is not negative, there is no math error).
Apply Quadratic Formula: Now, apply the quadratic formula with the calculated discriminant. Since the discriminant is 0, the formula simplifies to q=−b/(2a). So, q=−4/(2×2).
Final Solution: Perform the division: q=−4/4=−1. This is the only solution since the discriminant was 0.
More problems from Solve a quadratic equation using the quadratic formula