Solve by completing the square.v2−28v+17=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.v= _____ or v= _____
Q. Solve by completing the square.v2−28v+17=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.v= _____ or v= _____
Set up for completing the square: Write the equation in the form of v2+bv=c. The given equation is already in this form: v2−28v+17=0. Subtract 17 from both sides to set the equation up for completing the square. v2−28v=−17
Add number to complete square: Find the number to add to both sides to complete the square.To complete the square, we need to add (b/2)2 to both sides, where b is the coefficient of v.In this case, b=−28, so (b/2)2=(−28/2)2=(−14)2=196.Add 196 to both sides of the equation.v2−28v+196=−17+196v2−28v+196=179
Factor left side: Factor the left side of the equation.The left side of the equation is now a perfect square trinomial.(v−14)2=179
Take square root: Take the square root of both sides.To solve for v, take the square root of both sides of the equation.(v−14)2=±179v−14=±179
Solve for v: Solve for v.Add 14 to both sides of the equation to isolate v.v=14±179Since 179 is not a perfect square, we can approximate it to the nearest hundredth.179≈13.38v≈14±13.38
Find two values of v: Find the two values of v.v≈14+13.38 implies v≈27.38.v≈14−13.38 implies v≈0.62.Values of v: 27.38, 0.62
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