Practice Problems (Junior Cert Mathematics): Flashcards

Perfect square

$5\sqrt{2}$

$3\sqrt{2}$

$2\sqrt{2}$

Add coefficients: $(3+2)\sqrt{2} = 5\sqrt{2}$

$5\sqrt{2}$

Multiply inside: $\sqrt{3 \times 12} = \sqrt{36}$

$6$

Divide inside: $\sqrt{\frac{75}{3}} = \sqrt{25}$

$5$

$25 \times 2$

$6\sqrt{2}$

$2$ is not a perfect square