Solve by completing the square.k2+8k−17=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+8k−17=0Write 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 k2+bk=c. We start with the equation k2+8k−17=0 and move the constant term to the right side of the equation. k2+8k=17
Complete the Square:Complete the square by adding (b/2)2 to both sides of the equation.Since (8/2)2=16, we add 16 to both sides to complete the square.k2+8k+16=17+16k2+8k+16=33
Factor Left Side: Factor the left side of the equation.The left side of the equation is now a perfect square trinomial.(k+4)2=33
Take Square Root: Take the square root of both sides of the equation.We take the square root of both sides to solve for k.(k+4)2=±33k+4=±33
Solve for k: Solve for k.We isolate k by subtracting 4 from both sides of the equation.k=−4±33
Express Solution: Express the solution as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.Since 33 is an irrational number, we cannot express it as an integer or a fraction. We round it to the nearest hundredth.33≈5.74k≈−4±5.74k≈−4+5.74 or k≈−4−5.74k≈1.74 or k≈−9.74
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