Question

Calculati
a) $\sqrt{18}$x(3$\sqrt{50}$+$\sqrt{162}$)-$\sqrt{12}$x($[tex] \sqrt{432}-[tex] \sqrt{192}$)
b) ($\sqrt{360}$+2$\sqrt{2}$x$\sqrt{405}$)x($\sqrt{810}$-$\sqrt{162}$)

Answer 1

3√2•(15√2+9√2)-2√3•(√142-8√3)=3√2•24√2-2√426+48=3•2•24-2√426+48=144-2√426+48=192-2√426