1)4х+1/3=5х-1/3+15
-х=15-2/3
-х=14 2/3
х=-14 2/3
2)х+3=4х+32
-3х=29
х=-29/3=-9 2/3
3)х+8=4х+1,5
6,5=3х
х=6,5/3=65/30=13/6=2 1/6
4)1/6х=1/8х+4
1/24х=4
х=6
5)х+0,25=0,2х+6
0,8х=5,75
х=5,75/0,8=575/80=115/16=7 3/16
6)1/4+1/6=5/12
<span>(x - 5)(х-5) = 5x^2 – (2x - 1)(2x + 1)</span>
х^2-5x-5x+25=5x^2-4x2-2x+2x+1
x^2-10x-5x^2+4x^2=1-25
-10x=-24
х=2,4
<em>у</em>=<u>(2-х)(2+х)√х</u> =<em> √х</em>
(2-х)(2+х)