Question

Calculati:
a) $\sqrt{18}-3 \sqrt{32} +2 \sqrt{8} - \sqrt{72}$
b) 0.4 \sqrt{12} -0.9 \sqrt{27} +1.3 \sqrt{75} [/tex]
urgent....

Answer 1

$3 \sqrt{2} - 4 \sqrt{2} + 2*2 \sqrt{2} - 6 \sqrt{2} = -3 \sqrt{2}$