Solve using the quadratic formula.6x2−7x−5=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.x=_____ or x=_____
Q. Solve using the quadratic formula.6x2−7x−5=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.x=_____ or x=_____
Quadratic Formula: The quadratic formula is given by x=2a−b±b2−4ac, where a, b, and c are the coefficients of the quadratic equationax2+bx+c=0. In this case, a=6, b=−7, and c=−5.
Calculate Discriminant: First, calculate the discriminant, which is the part under the square root in the quadratic formula: b2−4ac. Here, it is (−7)2−4(6)(−5).
Perform Calculation: Perform the calculation: 49−(−120)=49+120=169.
Apply Discriminant: Now, apply the discriminant to the quadratic formula. The two possible solutions for x are x=2×6−(−7)±169.
Simplify Equation: Simplify the equation: x=127±169.
Solve for Addition: Since 169=13, the equation becomes x=12(7±13).
Simplify Fraction: Now, solve for both possible values of x. First, for the addition: x=(7+13)/12=20/12.
Solve for Subtraction: Simplify the fraction 1220 to its simplest form: x=35.
Simplify Fraction: Next, solve for the subtraction: x=127−13=12−6.
Simplify Fraction: Next, solve for the subtraction: x=127−13=12−6.Simplify the fraction 12−6 to its simplest form: x=2−1.
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