1.3m^2n^4(1+4m^4n^3)
2.4x^4 +28x^2+49
3.9x^2 -54x +81=x^2 -6x +9
4.(8x-5y)(8x+5y)
Sin 390 = sin (360+30) = sin 30
<span>sin 30 = 0.5</span>
Prjamaja y = -2x+4 imeet točky perecečenija s koordinatami: X/2,0/ i Y/0,4./
S(XOY) = 0,5.2.4 = 4
-16+64+48x+12x^2+x^3=x^3+12x^2
-16+64+48x=0
48+48x=0
48x=-48
x=-1