Pierwiastki :/
: 6 paź 2007, o 16:33
Witam. Pomóżcie mi to obliczyć bo ja bardzo nie lubię pierwistków i ich nie umiem.
Zadanie1.
Oblicz:
a)\(\displaystyle{ 0,2}\)\(\displaystyle{ \sqrt{50}}\)\(\displaystyle{ +0,8}\)\(\displaystyle{ \sqrt{72}}\)\(\displaystyle{ -0,3}\)\(\displaystyle{ \sqrt{32}}\)
b)\(\displaystyle{ \sqrt{18}}\)\(\displaystyle{ -}\)\(\displaystyle{ \sqrt{8}}\)\(\displaystyle{ +}\)\(\displaystyle{ \sqrt{98}}\)
c)\(\displaystyle{ \sqrt{45}}\)\(\displaystyle{ -}\)\(\displaystyle{ \sqrt{125}}\)
Zadanie2.
a)\(\displaystyle{ (\sqrt{3}+2\sqrt{2})(4\sqrt{3}-\sqrt{2})}\)
b)\(\displaystyle{ (3-\sqrt{7})(2+2\sqrt{7})}\)
c)\(\displaystyle{ (3+4\sqrt{2})^2}\)
Dziękuje za pomoc:)
Zadanie1.
Oblicz:
a)\(\displaystyle{ 0,2}\)\(\displaystyle{ \sqrt{50}}\)\(\displaystyle{ +0,8}\)\(\displaystyle{ \sqrt{72}}\)\(\displaystyle{ -0,3}\)\(\displaystyle{ \sqrt{32}}\)
b)\(\displaystyle{ \sqrt{18}}\)\(\displaystyle{ -}\)\(\displaystyle{ \sqrt{8}}\)\(\displaystyle{ +}\)\(\displaystyle{ \sqrt{98}}\)
c)\(\displaystyle{ \sqrt{45}}\)\(\displaystyle{ -}\)\(\displaystyle{ \sqrt{125}}\)
Zadanie2.
a)\(\displaystyle{ (\sqrt{3}+2\sqrt{2})(4\sqrt{3}-\sqrt{2})}\)
b)\(\displaystyle{ (3-\sqrt{7})(2+2\sqrt{7})}\)
c)\(\displaystyle{ (3+4\sqrt{2})^2}\)
Dziękuje za pomoc:)