(0,3ах³)² = 0,3² * а² * х³*² = 0,09а²х⁶
Х³-3х²-4х+12=0
х²(х-3) -4(х-3) = 0
(х-3)(х-2)(х+2)=0
х-3=0 х-2=0 х+2=0
<span>х₁=3 х₂=2 х₃=-2</span>
А^3-в^3=(а-в)(а^2+ав+в^2)
Ctg 140 -1.1918
sin 340 -0.342
У=(1/4)*x^4+(2/3)*x^3+1
у'=(1/4)*4*x^3+(2/3)*3*x^2+0 =<span>x^3+2*x^2 </span>