Simplify. 3 square root of 10 end root plus 7 square root of 15 end root minus 6 square root of 10 end root minus 4 square root of 15

3 square root of 10 end root minus 3 square root of 15
3 square root of 15 end root minus 3 square root of 10
3 square root of 30 end root minus 3 square root of 20
3 square root of 20 end root minus 3 square root of 30

Question

Simplify. 3 square root of 10 end root plus 7 square root of 15 end root minus 6 square root of 10 end root minus 4 square root of 15

 3 square root of 10 end root minus 3 square root of 15
  3 square root of 15 end root minus 3 square root of 10
 3 square root of 30 end root minus 3 square root of 20
 3 square root of 20 end root minus 3 square root of 30

anonymous · Answer

@rimshaa

anonymous · Answer

its 3*sqrt15 - 3*sqrt10 (answer b)

anonymous · Answer

thank you

anonymous · Answer

why?

expand all the sqrt terms (e.g. sqrt10 = sqrt5*sqrt2) and add common terms

anonymous · Answer

no problem

anonymous · Answer

wow thank you you are really smart