Solve using the quadratic formula.4x2+4x+1=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.4x2+4x+1=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.x=_____ or x=_____
Identify coefficients: Identify the coefficients of the quadratic equation4x2+4x+1=0. The coefficients are a=4, b=4, and c=1.
Recall quadratic formula: Recall the quadratic formula: x=2a−b±b2−4ac. We will use this formula to find the values of x.
Substitute coefficients: Substitute the coefficients a, b, and c into the quadratic formula.x=2(4)−(4)±(4)2−4(4)(1)
Simplify expression: Simplify the expression under the square root (the discriminant).x=8−4±16−16
Calculate discriminant: Calculate the discriminant.16−16=0So, the expression under the square root is 0.x=(−4±0)/8
Simplify further: Since the square root of 0 is 0, simplify the equation further.x=8−4±0
Solve for x: Solve for x by splitting the equation into the two possible solutions with the ± sign.Since the square root of 0 is 0, there is only one solution in this case.x=(−4+0)/8 or x=(−4−0)/8
Simplify expressions: Simplify both expressions to find the value of x.x=8−4 or x=8−4
Reduce fractions: Reduce the fraction to its simplest form. x=−21 or x=−21
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