<u><span>√x+10 = 2</span></u>
<span>x+10=4</span>
<span>x=4-10</span>
<em><u><span>x=-6</span></u></em>
<u><span /></u><u><span /></u><u><span><span>√4x+1 = 2x-1</span></span></u>
<span><span>4x+1=4x^2-4x+1</span></span>
<span><span>4x^2-4x+1-4x-1=0</span></span>
<span><span>4x^2-8x=0</span></span>
<span><span>4x(x-2)=0</span></span>
<span><span>4x=0</span></span>
<em><u><span><span>x=0</span></span></u></em>
<span><span>x-2=0</span></span>
<em><u><span><span>x=2</span></span></u></em>
<em><u /><span><span /></span></em><span><span /></span><span><span><u><span>√36x²-12x+1 +3x = 4</span></u></span></span>
<span><span><span>√36x²-12x+1=4-3x</span></span></span>
<span><span><span>36x^2-12x+1=16-24x+9x^2</span></span></span>
<span><span><span>36x^2-12x+1-9x^2+24x-16=0</span></span></span>
<span><span><span>27x^2+12x-15=0</span></span></span>
<span><span><span>9x^2+4x-5=0</span></span></span>
<span><span><span>D=4^2-4*9*(-5)=16+180=196=14^2</span></span></span>
<em><u><span><span><span>x1=((-4)+14)/2*9=10/18</span></span></span></u></em>
<em><u><span><span><span>x1=5/9</span></span></span></u></em>
<em><u>x2=((-4)-14)/2*9=-18/18</u></em>
<em><u>x2=-1</u></em>