Question

Пожалуйстааааааааа помогитеее

Answer 1

1) $7sqrt{6}-2sqrt{54}+sqrt{96}=7sqrt{6}-2sqrt{9}sqrt{6}+sqrt{16}sqrt{6}=7sqrt{6}-6sqrt{6}+4sqrt{6}=5sqrt{6}$

2)

$(sqrt{80}-sqrt{20})sqrt{5}=sqrt{80*5}-sqrt{20*5}=sqrt{400}-sqrt{100}=20-10=10$

3)

$(sqrt{10}-1)^2=(sqrt{10})^2-2*sqrt{10}*1+1^2=10+1-2sqrt{10}=11-2sqrt{10}$

4)

$(6sqrt{3}+sqrt{2})(6sqrt{3}-sqrt{2})=(6sqrt{3})^2-(sqrt{2})^2=36*3-2=108-2=106$