Solve using the quadratic formula.x2−8x+8=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.x2−8x+8=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. For the equation x2−8x+8=0, a=1, b=−8, and c=8.
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 (−8)2−4(1)(8).
Discriminant Calculation: Calculating the discriminant: (−8)2−4(1)(8)=64−32=32.
Apply Quadratic Formula: Now, apply the quadratic formula with the calculated discriminant. x=2×1−(−8)±32.
Simplify Equation: Simplify the equation: x=28±32.
Divide by 2: Since 32 can be simplified to 42, the equation becomes x=(8±42)/2.
Two Solutions: Divide both terms in the numerator by 2: x=4±22.
Approximate 2: Now we have two solutions for x: x=4+22 or x=4−22. To express these as decimals rounded to the nearest hundredth, we need to calculate the approximate values of 22.
Calculate Approximate Values: Approximating 22: 22≈2×1.41=2.82 (rounded to the nearest hundredth).
Approximate Solutions: Now, calculate the approximate values for x: x≈4+2.82 or x≈4−2.82.
Approximate Solutions: Now, calculate the approximate values for x: x≈4+2.82 or x≈4−2.82.The approximate solutions are: x≈6.82 or x≈1.18, rounded to the nearest hundredth.
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