(x+2)la a 2=x la a 2 +4x+4=4x+12
x la a 2 +4x-4x=12-4
x la a 2=8
x=√8
x=2√2
(x-3)la a 2=3(9-2x)
x la a 2 -6x+9=27-6x
x la a 2-6x+6x=27-9
x la a 2=18
x=√18
x=3√2
(2x+1)-3(x+2) la a 2=2(7-4x)
2x+1-3(x la a 2 +4x+4)=14-8x
2x+1-3x la a 2 -12x-12=14-8x
2x-3x la a 2-12x+8x=14+12-1
-2x-3x la a 2=25
(2x+1)la a 2=4(x+7)
4x la a 2 +4x+1=4x+28
4x la a 2 +4x-4x=28
4x la a 2 =28
x la a 2=7
x=√7