(3-2x)(6x-1)=(2x-3)^2
(3-2x)(6x-1)-(3-2x)^2=0
(3-2x)(6x-1-3+2x)=0
(3-2x)(8x-4)=0
3-2x=0 x=3/2
или
<span>8x-4=0 x=1/2</span>
(y-2)(y^2+3y-10)=0
(y-2)(y+5)(y-2)=0
y1=y2=2 y3=-5
1)5⁷ x 7⁸ 5⁷ x 7⁸
______ = ______ = 7¹ = 7.
35⁷ 5⁷ x 7⁷
2)
2¹⁷ x 3⁶ 2¹⁷ x 3⁶ 2¹² x 3¹ 2¹² x 3 2¹² x 3
_____ = _________ = _______ = ______ = ______ = 2² x 3 = 4 x 3 = 12.
24⁵ 2⁵ x 3⁵ x 4⁵ 4⁵ (2²)⁵ 2¹⁰
3) 36⁷ 2⁷ x 3⁷ x 6⁷ 6⁷ 2⁷ x 3⁷
_______ = _________ = _______ = ______ = 2² x 3⁴ = 4 x 81 = 324.
2¹² x 3¹⁰ 2¹² x 3¹⁰ 2⁵ x 3³ 2⁵ x 3³
в четвёртом степеней не видно.