1. 3805,6=3,8056*10³
0,045=4,5*10⁻²
0,00861=8,61*10⁻³
2. 10⁻⁸ * 10⁶ = 10⁻⁸⁺⁶ = 10⁻²
10⁻³ * 10⁻⁷ = 10⁻³⁺⁽⁻⁷⁾ = 10⁻¹⁰
10⁵ : 10⁻⁶ = 10⁵⁻⁽⁻⁶⁾ = 10¹¹
10⁻³ : 10⁹ = 10⁻³⁻⁹ = 10¹²
3. 4a²-9b² = (2a-3b)(2a+3b)
0,01x²-(16/49)y² = (0,1x-(4/7)y)(0,1x+(4/7)y)
x²-6xy+9y² = (x-3y)² = (x-3y)(x-3y)
25a²+60ab+36b² = (5a+6b)²=(5a+6b)(5a+6b)
8a³+b³ = (2a+b)(4a²-2ab+b²)
27x³-(1/8)y³ = (3x-(1/2)y)(9x²+(3/2)xy+(1/4)y²)
4. 2,743 - 2,74
13,005 - 13,01
98,996 - 99