Solve using the quadratic formula.8y2−6y−1=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.y=_____ or y=_____
Q. Solve using the quadratic formula.8y2−6y−1=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.y=_____ or y=_____
Identify values of a, b, and c: Identify values of a, b, and c from the equation 8y2−6y−1=0.a=8, b=−6, c=−1.
Plug values into quadratic formula: Plug a, b, and c into the quadratic formula y=2a−b±b2−4ac.y=2⋅8−(−6)±(−6)2−4⋅8⋅(−1).
Simplify equation: Simplify inside the square root and the constants outside.y=166±36+32.
Add numbers inside square root: Add the numbers inside the square root.y=166±68.
Calculate possible solutions: Simplify the square root (if possible) and calculate the two possible solutions for y.y=166±68.y=166+68 or y=166−68.
Round values if necessary: Round the values of y to the nearest hundredth, if necessary.y≈(6+8.25)/16 or y≈(6−8.25)/16.y≈14.25/16 or y≈−2.25/16.y≈0.89 or y≈−0.14.
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