Question

Помогите, пожалуйста.

Answer 1

$(3 sqrt{2} -1)(1+3 sqrt{2} )-(3 sqrt{2} - sqrt{1,5} )^{2}-6 sqrt{3} = \ = (3 sqrt{2} -1)(3 sqrt{2}+1 )-((3 sqrt{2})^{2} - 2*3sqrt{2}*sqrt{1,5}+ (sqrt{1,5})^{2})-6 sqrt{3} = \ =18-1-(18 - 6sqrt{3}+ 1,5)-6 sqrt{3}= \ =18-1-18 + 6sqrt{3}- 1,5-6 sqrt{3}=-1-1.5=-2.5$

$(8+2 sqrt{15} )( sqrt{5} - sqrt{3} )^{2}-( sqrt{3} + sqrt{2} )(sqrt{3} - sqrt{2} )= \ (8+2 sqrt{15} )( 5 - 2 sqrt{5*3}+3)-( 3-2)= \ =(8+2 sqrt{15} )( 8- 2 sqrt{15})- 3+2= \ =64-4* 15- 1=64-60-1=3$

Answer 2

Огромное спасибо!)