2X^2 - 3X - 2 = 0
D = 9 + 16 = 25 ; V D = 5
X1 = ( 3 + 5 ) : 4 = 2
X2 = ( - 2 ) : 4 = ( - 0,5 )
Ответ 2 и ( - 0,5 )
<span>5sin8x=10</span>
<span>sin8x=10/5</span>
<span>sin8x=2</span>
<u><span>Ответ:sin8x=2</span></u>
X+y+z=30
y=x-2
z=x-4
x+x-2+x-4=30
3x=30+2+4
3x=36
x=12
y=12-2=10
z=12-4=8
70.060 .......................