How do you solve #x^2/81-6=-2# using any method?
1 Answer
Mar 7, 2018
Explanation:
#"add 6 to both sides"#
#x^2/81cancel(-6)cancel(+6)=-2+6#
#rArrx^2/81=4#
#"to eliminate the fraction multiply both sides by "81#
#cancel(81)xx x^2/cancel(81)=81xx4#
#rArrx^2=324#
#color(blue)"take square root of both sides"#
#x=+-sqrt324larrcolor(blue)"note plus or minus"#
#rArrx=+-18" is the solution"#
