n(n - 4) = 7

vestirme4

vestirme4

Answered question

2020-11-05

n(n - 4) = 7

Answer & Explanation

Brittany Patton

Brittany Patton

Skilled2020-11-06Added 100 answers

We are given: n(n - 4) = 7
Multiply the left side: n24n=7
Complete the square by adding (b2)2 on both sides. Here, b=-4 so we add (42)2=4 to both sides:
n24n+4=7+4
(n2)2=11
Take the square root of both sides: n2=±11
Add 2 to both sides: n=2±11
Jeffrey Jordon

Jeffrey Jordon

Expert2021-08-10Added 2605 answers

Answer is given on video

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