1)2ху-3ху2=ху(2-3у)
2)с3-16с=с(с2-16)=с(с+4)(с-4)
3)36а4-25а2в2=а2(36а2-25в2)=
а2(6а-5в)(6а+5в)
Cos ( - 600°) = cos (600°) = cos (3pi + 60) = - cos (60<span>°) = - 1/2 </span>
5x^2 - 4x - 1 = 0
D = 16 + 20 = 36
x1 = (4 + 6)/10 = 1
x2 = (4 - 6)/10 = - 1/5 = - 0,2
1)(√10)²=10
2)(√3,2)²=3,2
3)(-√7)²=7
4)-(√13)²=-13
5)(-√2)²=2
6)(√(-5)²)²=25
7)-(-√17)²=-17
8)-(-√(-6)²)²=-36