2) 4=a1+3d
36=a1+11d
8d=32
d=4
4=a1+3d
a1=4-3d=4-3*4=-8
<span>-0,125d¹⁸x⁴⁵=(-0.5d⁶x¹⁵)³
-343b³³m⁹=(-7b¹¹m³)³
0,216c⁹x⁶ =(0.6c³x²)³
82b+54b=136b
0.5bd⁷*1.2b¹⁴d¹³=0.6b¹⁵d²⁰
(-7b¹¹m³)³=-343b³³m⁹
</span>0,008n³⁹ y¹⁵=(0,2n¹³y⁵)³
(3-9b^2)-(b^3-6b+7)=
3-9b^2-b^3+6b-7= 3-8b^3+6b-7= 8b^3+6b-4
15y^3-(3y-2)(5y-1)=
15y^3-(3y-2)(5y-1)=15y^3-(15y^2-3y-10y+2)= 15y^3-15y^3+3y+10y-2= 13y-2
(1-х)(2+х)+(3+х)(4+х)=2+x-2x-x^2+12+3x+4x+x^2=14+6x
14+6*5/6=14+5=19