=24*(1/4)²-2,5-4=24*1/16-2,5-4=3/2-2,5-4=1,5-2,5-4=-5
Y(y^2-4)=0
y=0 y^2-4=0
y^2=4
y=2 y=-2
<span> 3x(3x-1)-(2-3x)^2=9x^2-3x-(4-12x+9x^2)=9x^2-3x-4+12x-9x^2=9x-4 => <span>при x=1/3</span></span>
а) (3а*(4а²-5))-а*(4-11а²)
3а*(4а²-5)-а*(4-11а²)
а*(3(4а²-5)-(4-11а²))
а*(12а²-15-4+11а²)
а*(23а²-19)
б) 8b*3c-8b*b+8b*14
24bc-8b²+112b