「中学数学3年 平方根」の版間の差分

(4\sqrt{2} + \sqrt{3})^2 &=& (4\sqrt{2})^2 + 2 \times 4\sqrt{2} \times \sqrt{3} + (\sqrt{3})^2 \\

&=& 32 + 8\sqrt{6} + 3 \\

(4\sqrt{2} + \sqrt{3})^2 &=& (4\sqrt{2} + \sqrt{3})(4\sqrt{2} + \sqrt{3}) \\

&=& (4\sqrt{2})^2 + \sqrt{3} \times 4\sqrt{2} + 4\sqrt{3} \times \sqrt{3} + (\sqrt{3})^2 \\