Question

Va rog , imi trebuie urgent :) .
1. Solutia ecuatiei : x+√2=0 x=?
2. Solutia ecuatiei : 8·x=0,16 x=?
3. Solutia ecuatiei : x²=6 x=?
4. sin30°=...... cos....°

Answer 1

1.x=-radical 2 2.x=0.002 3.x=plus minus radical 6 4.sin30=cos60

Answer 2

$\displaystyle 1).x+ \sqrt{2} =0 \\ x=0- \sqrt{2} \\ x=- \sqrt{2} \\ 2).8x=0,16 \\ x= \frac{0,16}{8} \\ x=0,02 \\ 3).x^2=6 \\ x= \sqrt{6} \\ x=- \sqrt{6} \\ 4).sin~30^o=cos~60^o \\ sin~30^o= \frac{1}{2} ;cos~60^o= \frac{1}{2}$