Question

(2√2+3√3)²=?
(5√3+4√2)•(5√3-4√2)=?
(2√2-3√3)²=?
Cine ma ajuta?. Va rog!

Answer 1

$(2 \sqrt{2} + 3\sqrt{3})^2 = 8 + 12\sqrt{6} + 27 = 35 + 12\sqrt{6}$

$(5\sqrt{3}+4\sqrt{2})(5\sqrt{3}-4\sqrt{2} ) = (5\sqrt{3})^2 - (4\sqrt{2})^2 = 75 -32 = 43$

$(2 \sqrt{2} - 3\sqrt{3})^2 = 8 - 12\sqrt{6} + 27 = 35 - 12\sqrt{6}$