How do you solve #n^2+8=80#?
1 Answer
Feb 13, 2017
Explanation:
#"Isolate "n^2"# by subtracting 8 from both sides of the equation.
#n^2cancel(+8)cancel(-8)=80-8#
#rArrn^2=72# Take the
#color(blue)"square root"# of both sides.
#sqrt(n^2)=+-sqrt72#
#rArrn=+-sqrt72# Simplifying
#sqrt72#
#n=+-(sqrt(36xx2))#
#color(white)(n)=+-(sqrt36xxsqrt2)#
#rArrn=+-6sqrt2#
