√ x-3=5
x-3=25
x=25+3
x=28
√(3-2x)²=0
(3-2x)²=0
x=3/2
<span>7c(4c+2)-(7+c)</span>² = <em>28с²</em> + <u>14с</u> -49 -<u>14с</u> - <em>с²</em> = 27с² - 49