Solve by completing the square.v2+20v−39=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+20v−39=0Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.v= _____ or v= _____
Rewrite in standard form:v2+20v−39=0Rewrite the equation in the form of x2+bx=c.Add 39 to both sides to set the equation up for completing the square.v2+20v−39+39=0+39v2+20v=39
Add 39 to both sides:v2+20v=39Choose the number to add to both sides to complete the square.Since (20/2)2=100, add 100 to both sides.v2+20v+100=39+100v2+20v+100=139
Complete the square:v2+20v+100=139Identify the equation after factoring the left side.v2+20v+100=139(v+10)2=139
Identify factored form:v+10)2=139(Identify the equation after taking the square root on both sides.Take the square root of both sides of the equation.\$\sqrt{(v + 10)^2} = \sqrt{139}\)\(\newline\)\(v + 10 = \pm\sqrt{139}\)
Take square root: We found:\(\newline\)\(v + 10 = \pm\sqrt{139}\)\(\newline\)Choose the equation after isolating the variable \(v\).\(\newline\)To isolate \(v\), subtract \(10\) from both sides of the equation.\(\newline\)\(v + 10 - 10 = \pm\sqrt{139} - 10\)\(\newline\)\(v = -10 \pm \sqrt{139}\)
Isolate variable: We have:\(\newline\)\(v = -10 \pm \sqrt{139}\)\(\newline\)What are the two values of \(v\)?\(\newline\)\(v = -10 + \sqrt{139}\) and \(v = -10 - \sqrt{139}\)\(\newline\)Round the non-terminating values to the nearest hundredth.\(\newline\)\(v \approx -10 + 11.79\) implies \(v \approx 1.79\).\(\newline\)\(v \approx -10 - 11.79\) implies \(v \approx -21.79\).\(\newline\)Values of \(v\): \(1.79\), \(v\)\(0\)
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