How do you solve #k^2 = 10.24#?

Question

1521 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-03-09T06:40:14

Follow explanation. Your solution: #k=+-3.2#

Your equation can be arranged

#k^2 = 10.24#

#sqrt(k^2) = +-sqrt (10.24)#

#k=+-3.2#

Because of the fact that #sqrt(k^2) = +-(k^2)^0.5 = +-k#

There are two possible roots.

Answer 2 · 2018-03-09T06:45:23

#k=+-3.2#

Square root both sides of the equation

#sqrt(k^2= +-sqrt(10.24)#
#k=+-3.2#

There are two possible roots.

Check solution

#+3.2^2=10.24#
#(-3.2)^2=10.24#

#10.24=10.24#