https://web2.0calc.com/questions/help_54234#r3
16*8/2=64
https://www.desmos.com/calculator/4347euwrxr
2^2+1^2=5
each side of the square is \(\sqrt5 \). the area is 5
21+12+10+16=49
5*4*15=300
how did you get it
CPhill can you do something about him
this has been answered here
https://web2.0calc.com/questions/rational-expressions-of-polynomials
