ex 1
4√27 - 5√12 + 3√48 - 2√75=
=4√9*3 - 5√4*3 + 3√16*3 - 2√25*3
= 4*3√3 - 5*2√3 + 3*4√3 - 2*5√3
=12√3 - 10√3 + 12√3 - 10√3
=24√3 -20√3
=4√3
ex 2
[tex]0,(3)x^{2} =\frac{27}{256}\\\\ \frac{1}{3} *x^{2} =\frac{27}{256}\\\\x^{2} =\frac{27}{256}:\frac{1}{3}\\\\x^{2} =\frac{27}{256}*3\\\\x^{2} =\frac{81}{256}\\\\x_1=\frac{9}{16} \\\\x_2= -\frac{9}{16}[/tex]
