Solve by completing the square.k2+6k=23Write 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+6k=23Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.k= _____ or k= _____
Rewrite Equation: Rewrite the equation in the form of x2+bx=c.k2+6k=23
Complete the Square: Choose the number to add to both sides to complete the square.Since (26)2=9, add 9 to both sides.k2+6k+9=23+9k2+6k+9=32
Factor Left Side: Identify the equation after factoring the left side.k2+6k+9=32(k+3)2=32
Take Square Root: Identify the equation after taking the square root on both sides.Take the square root of both sides of the equation.(k+3)2=32k+3=±32
Simplify Square Root: Simplify the square root and round the non-terminating values to the nearest hundredth. k+3=±32k+3=±5.66 (rounded to the nearest hundredth)
Isolate Variable: Choose the equation after isolating the variable k. To isolate k, subtract 3 from both sides of the equation. k+3−3=±5.66−3k=2.66 or k=−8.66 (rounded to the nearest hundredth)
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