У+(5у+2)^2=25(2+у^2)
y+25y^2+20y+4= 50+25y^2
y+25y^2+20y-25y^2=50-4
21y=46
у=46/21
у=2 целых 4/21
11¹⁰(1+11)+ 4* (7⁴⁹-7⁴⁸)=11¹⁰(12)+ 4* (7⁴⁹-7⁴⁸)=12*11¹⁰+ 4* (7⁴⁹-7⁴⁸)
(3,71 - 4,81):(-2,2) + 3,85:77/55 = (-1,1):(-2,2) + 3,85·55/77 = 0,5 + 3,85·5/7 = 0,5 + 2,75 = 3,25
<span>2x+3x^3162x^8-14x48x+12x62<span>48x+12x^2</span></span>