Question

1)2√18+3√27-2√75
2)2√3 x (√32-√128)
3)1 pe √2 + 3 pe 2√2 - 5 pe 4√2

Answer 1

1)2√18+3√27-2√75=2*3√2+3*3√3-2*5√3=6√2+9√3-10√3=6√2-√3

2)2√3 x (√32-√128)=2√3x(4√2-8√2)=-2√3x4√2=-8√6

3)1 /√2 + 3 /2√2 - 3/ 2√2=1√2=√2/2