How do you simplify 3square root 18 - square root 50 +2 square root 72?

• (3(18)^1/2)-((50)^1/2)+(2(72)^1/2)
  (3(9*2)^1/2)-((25*2)^1/2)+(2(36*2)^1/2)
  (3*3(2)^1/2)-(5*(2)^1/2)+(2*6(2)^1/2)
  (2)^1/2*{9-5+12}
  (2)^1/2 * (16)=> 16*(2)^1/2
• 10 years agoHelpfull: Yes(0) No(0)
• 3*sqrt18 - sqrt50 + 4*sqrt18
  7*sqrt18 - 5*sqrt2
  7*3*sqrt2-5*sqrt2
  16*sqrt2
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• =3*SR(18)-SR(50)+2*SR(72)
  =9*SR(2)-5*SR(2)+12*SR(2)
  =16*SR(2)
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