Rationalize \(\frac{5\sqrt{7} - 7\sqrt{5}}{\sqrt{7} - \sq...
Rationalize \(\frac{5\sqrt{7} - 7\sqrt{5}}{\sqrt{7} - \sqrt{5}}\)
-2\(\sqrt{35}\)
4\(\sqrt{7}\) - 6\(\sqrt{5}\)
-\(\sqrt{35}\)
4\(\sqrt{7}\) - 8\(\sqrt{5}\)
\(\sqrt{35}\)
Correct answer is C
\(\frac{5\sqrt{7} - 7\sqrt{5}}{\sqrt{7} - \sqrt{5}}\) = \(\frac{5\sqrt{7} - 7\sqrt{5}}{\sqrt{7} - \sqrt{5}}\) x \(\frac{\sqrt{7} + \sqrt{5}}{\sqrt{7} + \sqrt{5}}\)
= \(\frac{(5 \times 7) + (5 \sqrt{7} \times 5) - (7 \times \sqrt{5} \times 7) (-7 \times 5)}{(\sqrt{7})^2}\)
= \(\frac{5 \sqrt{35} - 7\sqrt{35}}{2}\)
= \(\frac{-2\sqrt{35}}{2}\)
= - \(\sqrt{35}\)
Which of the following angles is an exterior angle of a regular polygon? ...
If \(N = \begin{pmatrix} 3 & 5 & -4 \\ 6 & -3 & -5 \\ -2 & 2 & 1 \end{pmatri...
Find the nth term of the sequence 3, 6, 10, 15, 21........
IN the diagram, |LN| = 4cm, LNM = 90o and tan y = 2/3. What is the area of the ∆LMN?...