Solve using the quadratic formula.3y2−6y−4=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.3y2−6y−4=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, c: Identify the values of a, b, and c in the quadratic equation3y2−6y−4=0. The quadratic equation is in the form ay2+by+c=0. For our equation, a=3, b=−6, and b0.
Substitute values into quadratic formula: Substitute the values of a, b, and c into the quadratic formula y=2a−b±b2−4ac. The quadratic formula is y=2⋅3−(−6)±(−6)2−4⋅3⋅(−4).
Simplify expression inside square root: Simplify the expression inside the square root and the constants outside the square root.Calculate (−6)2, which is 36, and 4×3×(−4), which is −48. The expression inside the square root becomes 36−(−48).
Further simplify inside square root: Further simplify the expression inside the square root. 36−(−48) simplifies to 36+48 which is 84.
Simplify 84: Simplify 84 to its simplest radical form.84 can be simplified to 4×21 which is 2×21.
Substitute simplified square root: Substitute the simplified square root back into the quadratic formula.The quadratic formula now becomes y=66±221.
Simplify quadratic formula: Simplify the quadratic formula by dividing all terms by the common factor of 6. y=(1±(31)21). This gives us two possible solutions for y.
Calculate two possible solutions: Calculate the two possible solutions for y. The first solution is y=1+3121, and the second solution is y=1−3121.
Round values of y: If necessary, round the values of y to the nearest hundredth.y≈1+0.333×4.58 or y≈1−0.333×4.58y≈1+1.53 or y≈1−1.53y≈2.53 or y≈−0.53
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