Solve by completing the square.k2−14k−5=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.k=_____ or k=_____
Q. Solve by completing the square.k2−14k−5=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.k=_____ or k=_____
Write Equation Form: Write the equation in the form that separates the constant term from the k terms.k2−14k=5
Find Completes Square: Find the number that completes the square for the k terms. This is done by taking half of the coefficient of k and squaring it.(−214)2=49
Add/Subtract to Complete Square: Add and subtract this number to the left side of the equation to complete the square, and add it to the right side to keep the equation balanced.k2−14k+49=5+49
Write as Squared Binomial: Write the left side of the equation as a squared binomial and simplify the right side.(k−7)2=54
Take Square Root: Take the square root of both sides of the equation to solve for k.k−7=±54
Simplify Square Root: Simplify the square root of 54. Since 54=9×6 and the square root of 9 is 3, we can write 54 as 36. k−7=±36
Solve for k: Solve for k by adding 7 to both sides of the equation.k=7±36
Approximate Square Root: Since the question asks for the answer as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth, we need to approximate 36. 36≈3×2.45≈7.35
Write Approximate Values: Now, write the approximate values of k to the nearest hundredth.k≈7+7.35 or k≈7−7.35k≈14.35 or k≈−0.35
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