Question

Por favor me ajudem!!!

A) 2y+4y-2y = ----> y= 1/2

B) 3x- 4x-4 = ----> x= -3

C) 3y²-4x-2= ----> y= -1 , x= 2

D) x²-6x+9= ----> x= 1/3

Obg

Answer 1

a)
y=1/2

2y+4y-2y
2(1/2)+4(1/2)-2(1/2)=
(2/2)+(4/2)-(2/2)=
1+2-1=
2

b)
x= -3

3x-4x-4
3(-3)-4(-3)-4=
-9+14-4=
1

c)
y= -1
x=2

3y²-4x-2
3(-1)²-4(2)-2=
3(1)-8-2=
3-10=
-7

d)
x=1/3

x²-6x+9
(1/3)²-6(1/3)+9=
1/9-6/3+9=
3-54/27+9=
-51/27+9=
-17/9+9=
-8/9