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e) a+b
f) x-6
g) c³
h) y-9
2)
d)
7a+6a-4a=9a
e) 16x+6y
f) 5a²+10-9a²-4= -4a² +6
3)
13+5=18
b) 4*1\2-2*(-3) - 5=2+6-5=3
4)
e) 2x+6+8x-4=10x+2
f) 5+6z+3y-4z-3y-8=2z-3
g) 7x+2y+3+3x-2y-4=10x-1
h) 10x²+7-3xy-6x²+4xy-5=4x²+xy+2
5)
e) 15x-10y
f) 6a²-10ac-8a
g) 12a²-8a+9a-6=12a²+a-6
h) x²+3x+2x+6=x²+5x+6
6)
2(x+2)+2(3+y0=2x+4+6+2y
e)a+b
f)x-6
g)c³
h)y-9
zad2
d)7a+6a-4a=9a
e)12x+8y+4x-2y=16x+6y
f)5a²+2ab-2ab+10-9a²-4= -4a²+6
zad3
a)a+5=13+5=18
b)4x-2y-5=4x1/2-2x(-3)-5=4/2+6-5=2+1=3
zad4
e)2x+6+(8x-4)=2x+6+8x-4=10x+2
f)5+6z+3y-(4z+3y+8)=5+6z-3y-4z-3y-8= -6y+6z-3
g)(7x+2y+3)+(3x-2y-4)=7x+2y+3+3x-2y-4=10x-1
h)10x²+7-3xy-(6x²-4xy+5)=10x²+7-3xy-6x²+4xy-5=4x²+xy+2
zad5
e)5(3x-2y)=15x-10y
f)2a(3a-5c-4)=6a²-10ac-8a
g)(4a+3)(3a-2)=12a²-8a+9a-6=12a²+a-6
h)(x+2)(x+3)=x²+3x+2x+6=x²+5x+6