Solve using the quadratic formula.k2+4k+4=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.k=_____ or k=_____
Q. Solve using the quadratic formula.k2+4k+4=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.k=_____ or k=_____
Identify coefficients: Identify the coefficients of the quadratic equation.The quadratic equation is in the form ax2+bx+c=0. For the equation k2+4k+4=0, the coefficients are:a = 1, b = 4, and c = 4.
Write formula: Write down the quadratic formula.The quadratic formula is given by k=2a−b±b2−4ac.
Substitute coefficients: Substitute the coefficients into the quadratic formula.Substitute a=1, b=4, and c=4 into the formula to get:k=(−(4)±(4)2−4(1)(4))/(2(1)).
Simplify square root: Simplify under the square root.Calculate the discriminant b2−4ac:(4)2−4(1)(4)=16−16=0.
Simplify formula: Simplify the quadratic formula with the discriminant.Since the discriminant is 0, the square root of 0 is 0, so the formula simplifies to:k=(−(4)±0)/(2(1)).
Solve for k: Solve for k.Simplify the expression to find the value of k:k=(−4)/2=−2.Since the discriminant is 0, there is only one real solution.
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