Question

ex 19 si 20 va rog!!!!!!!!!!!!!!!

Answer 1

Răspuns

20) a) 5 radical din 6

b) -11 radical din 6

Explicație pas cu pas:

a) $\sqrt{18} * ( 7\sqrt{3}-6\sqrt{3}+10\sqrt{3}-12\sqrt{3} )+4\sqrt{3} (5\sqrt{2}-4\sqrt{2}+8\sqrt{2}-7\sqrt{2} )\\\sqrt{18}* (-\sqrt{3} )+4\sqrt{3} *2\sqrt{2} \\-\sqrt{54} + 8\sqrt{6} \\-3\sqrt{6} + 8\sqrt{6} \\5\sqrt{6}$

b)$\sqrt{27} * ( 4\sqrt{2}-6\sqrt{2}+9\sqrt{2}-12\sqrt{2} )+2\sqrt{2} (6\sqrt{3}-8\sqrt{3}+9\sqrt{3}-5\sqrt{3} )\\\sqrt{27}* (-5\sqrt{2} )+2\sqrt{2} *2\sqrt{3} \\-3\sqrt{3} * 5\sqrt{2} + 4\sqrt{6}  \\-15\sqrt{6} + 4\sqrt{6} \\-11\sqrt{6}$