solve problems involving radicals

Answer:
1. The measure of its side is 12 in after increasing it.
2. The original length of the side is 10 in.
3. If the area is 128 in², the length is 8[tex]\sqrt{2}[/tex].
Step-by-step explanation:
1. square root of 144= 12
2. 14-4=10
3. square root of 128 = [tex]\sqrt{64*2}[/tex] or [tex]8\sqrt{2}[/tex].