<span>6*0,12=36х
</span><span>
</span><span>0,72=36х
</span><span>
</span><span>х=0,72:36
</span><span>
</span><span>х=0,02<span>
</span></span><span><span>
</span></span><span><span> 6:0,02=300 и 36:0,12=300
</span></span>
<span><span /></span><span><span /></span><span><span> 300=300</span></span>
X²+3x=18
x²+3x-18=0
D=3²-4*(-18)=81
x1=(-3-√81)/2=-6
x2=(-3+√81)/2=3
<span>( 2,4 + 3/5х) = 1 1/15х + 1, 56.</span>
3/5x-1 1/15x=1,56-2,4
3/5x-16/15x=1,8
-7/15x=1,8
x=18/10*(-15/7)
x=-3 6/7
М(1);С(-1,2);F(1,3);A(0,3);B(0 -3) N(-3 4) E( 2 1) K (3 -2 ) H( -3 -2) D(-3 0)