<span> |x^2-x-6| = 6
x^2-x-6=6 x^2-x-6-6=0 x^2-x-12=0 D=1+48=49=7^2 x=(1</span><span>±7)/2=></span><span>
x^2-x-6=-6 x^2-x=0 x*(x-1)=0 x=0 x=1
x</span>₁=4
<span>
x</span>₂=-3
<span>
x</span>₃=0
<span>
x</span>₄=1<span>
</span>
<span> f(x)=6x</span>²<span> + 3/Sin</span>²<span>x
F(x) = 6x</span>³/3 -3Ctgx +C = 2x³ -3Ctgx +C
147*85+53*60+147*15+53*40=
147(85+15)+53(60+40)=
147*100+53*100=
100(147+53)=100*200=20000
√<span>3 sin 3x=cos 3 x /(</span>√3)*<span>cos3x </span>≠ 0
tg(3x) = 1/√3
3x = arctg(1/√3) + πn, n∈Z
3x = π/6 + πn, n∈Z
x = π/18 + (πn)/3, n∈Z