1). (x^4)^5*x^2=x^20*x^2=x^22; x^6*x^8=x^(6+8)=x^14; x^8:x^3=x^(8-3)=x^5; (x^6)^8=x^(6*8)=x^48; ^-это степень.
X^2 - 3x - 10 = 0;
Корни будут 5 и -2
Света-x
Катя-x+2
Ира-x+2-6
Юля-(x+2)2
x+x+2+x-4+(x+2)2=62
3x-2+2x+4=62
5x=62-2
5x=60|:5
x=12(б)-Света
Юля=(12+2)2=28(б)
28-12=16(б)
1)= (ах-ау)+(zx-zy)=a(x-y)+z(x-y)=(a+z)(x-y)
$$$$$$$$
2) =(x^2-xy)-(6x-6y)=x(x-y)-6(x-y)=(x-6)(x-y)
$$$$$$$$$
(x+y)(y+p)=xy+xp+y^2+yp.
(2-y)(3y-8)(4a^2+b^2)=
=(6y-16-3y^2+8y)(4a^2+b^2)=
=(14y-16-3y^2)(4a^2+b^2)=
=56a^2y+14b^2y-64a^2-16b^2-12a^2y^2-3b^2y^2