WAEC - Mathematics (2009 - No. 28)
Simplify; \(\frac{1}{2}\sqrt{32} - \sqrt{18} + \sqrt{2}\)
zero
\(\sqrt{2}\)
2\(\sqrt{2}\)
4\(\sqrt{2}\)
Пояснення
\(\frac{1}{2}\sqrt{32} - \sqrt{18} + \sqrt{2}\) = \(\frac{1}{2} (4\sqrt{2}) - 3\sqrt{2} + \sqrt{2}\)
= 2\(\sqrt{2} - 3\sqrt{2} + \sqrt{2}\)
= 3\(\sqrt{2} - 3\sqrt{2} - 3\sqrt{2}\) = 0
= 2\(\sqrt{2} - 3\sqrt{2} + \sqrt{2}\)
= 3\(\sqrt{2} - 3\sqrt{2} - 3\sqrt{2}\) = 0