If \(x + \frac{1}{x} = 4\), find \(x^2 + \frac{1}{x^2}\)

Simplify \( \sqrt{27} + \frac{3}{\sqrt{3}} \)

Correct 241.34(3 x 10-3)2 to 4 significant figures

Three children shared a basket of mangoes in such a way that the first child took \( \frac{1}{4} \) of the mangoes and the second \( \frac{3}{4} \) of the re...

The H.C.F. of a2bx + ab2x and a2b - b2 is

At what rate would a sum of ₦100.00 deposited for 5 years raise an interest of ₦7.50?

Simplify \(4\frac{3}{4} - 6\frac{1}{4}\)

Simplify and express in standard form \( \frac{0.00275 \times 0.0064}{0.025 \times 0.08} \)

Simplify \( \sqrt{160r^2} + \sqrt{71r^4} + \sqrt{100r^2} \)