75² (3*25)² 3² * 25² 9*25*5*5 5
-------- = ---------- = ------------- = -------------------- = ------- = 5/81
45³ (9*5)³ 9³* 5³ 9²*9*5* 25 9²
<span>x²-3x-10>0
D=9+40=49 </span>√D=7
x₁=(3+7)/2=5
x₂=(3-7)/2=-2
___+____-2____-______5______+_____
x∈(-∞;-2)∪(5;+∞)
0.5x+x²-1.5x³= x(0.5+x-1.5x²)
a²b-2a³b²+3ab³-ab²= ab(a-2a²b+3b²-b)
-m²x+4mx²+3m³= m(-mx+4x²+3m²)
0.7x³-1.4²+2.1x-2.8x⁴= 0.7(x³-2²+3x-4x⁴)