Solve using the quadratic formula.4w2−4w−4=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.w=_____ or w=_____
Q. Solve using the quadratic formula.4w2−4w−4=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.w=_____ or w=_____
Identify coefficients: Identify the coefficients of the quadratic equation.The quadratic equation is in the form ax2+bx+c=0. For the equation 4w2−4w−4=0, the coefficients are:a = 4b = −4c = −4
Substitute into formula: Substitute the coefficients into the quadratic formula.The quadratic formula is w=2a−b±b2−4ac. Substituting the values we get:w=2⋅4−(−4)±(−4)2−4⋅4⋅(−4)
Simplify under square root: Simplify the equation under the square root.Calculate the discriminant b2−4ac:Discriminant = (−4)2−4⋅4⋅(−4)Discriminant = 16+64Discriminant = 80
Continue simplifying formula: Continue simplifying the quadratic formula with the discriminant. w=84±80
Simplify square root: Simplify the square root of the discriminant. 80 can be simplified to 16×5, which is 4×5. w=84±4×5
Divide by common factor: Simplify the equation by dividing by the common factor.Both terms in the numerator have a common factor of 4, so we can simplify:w=21±5
Calculate possible solutions: Calculate the two possible solutions for w.w=21+5 or w=21−5
Round values: Round the values of w to the nearest hundredth, if required.w≈(1+2.24)/2 or w≈(1−2.24)/2w≈3.24/2 or w≈−1.24/2w≈1.62 or w≈−0.62
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