How do you simplify -4sqrt10+6sqrt40410+640?

1 Answer
Jul 8, 2015

-4sqrt(10)+6sqrt(4) = 8sqrt(10)410+64=810

Explanation:

sqrt(40) = sqrt(4)*sqrt(10) = 2sqrt(10)40=410=210
So
6sqrt(40) = 6*2sqrt(10) = 12 sqrt(10)640=6210=1210

and
-4sqrt(10)+6sqrt(10)410+610

color(white)("XXXX")XXXX=-4sqrt(10)+12sqrt(10)=410+1210

color(white)("XXXX")XXXX=(-4+12)(sqrt(10))=(4+12)(10)

color(white)("XXXX")XXXX=8sqrt(10)=810