Question

Вычислите: А,Г,Д
Пожалуйстааа помогите ​

Answer 1

Объяснение:

а) (√5-√125)² = 5-2√5*125+125= 130-2√5*5*25=130-√25²=130-25=105

г) (5√3+6√2)*(5√3-6√2)= (5√3)²-(6√2)²= 75-72=3

д) (√2-√8)³ = (√2-2√2)³= (-√2)³= -2√2

Answer 2

$1)(\sqrt{5}-\sqrt{125})^{2}=(\sqrt{5}-\sqrt{25*5})^{2}=(\sqrt{5} -5\sqrt{5})^{2}=(-4\sqrt{5})^{2}=16*5=80\\\\2)(5\sqrt{3}+6\sqrt{2} )*(5\sqrt{3}-6\sqrt{2})=(5\sqrt{3})^{2} -(6\sqrt{2})^{2}=25*3-36*2=\\\\=75-72=3\\\\3)(\sqrt{2}-\sqrt{8})^{3} =(\sqrt{2} -\sqrt{4*2})^{3}=(\sqrt{2}-2\sqrt{2})^{3}=(-\sqrt{2})^{3}=-2\sqrt{2}$