X^2-x-30=0
x1=6
x2=-5
Удачи!!))
<span>{ 5 - 3x >= -1 { 3 - 4x >= 8 => { 3x =< 6 { 4x =< -5 => { x =< 2 { x =< -5\4 => x=< -</span><span />
a) 4+2q+q^2= (2+q)^2
б) x^2+6x+1=x^2+6x+1+8-8 = x^2+6x+9 - 8 = (x+3)^2 - 8
в) a^2-4a+1= a^2-4a+1 +3 - 3=a^2-4a+4 -3 = (a-2)^2-3
г) m^2-6m+9=(m-3)^2
д) 16+8p+p^2 = (4+p)^2
е) a^2-2a= a^2-2a +1 -1= (a-1)^2 -1
5^(2x - 2) * 5^(x - 1) = 5
5^(2x - 2 + x - 1) = 5^1
2x - 2 + x - 1 = 1
3x - 3 = 1
3x = 4
x = 4/3