1 6х – 12 = 4х – 8 2 ( 2у – 5) – (3у – 7) = 4 3 5 (х – 1,2) – 3х = 2 4 4 х2 – 3х = 0 5...

Question

1 6х – 12 = 4х – 8
2 ( 2у – 5) – (3у – 7) = 4
3 5 (х – 1,2) – 3х = 2
4 4 х2 – 3х = 0
5 у2 – 16 = 0
6 ( 3 – х )( х + 4 ) + х2 = 0

Answer 1

1. 6x-4x=-8+12
    2x=4
    x=2
2. 2y-3y=4+5-7
    -y=2
    y=-2
3. 5x-3x=2+6
    2x=8
     x=4
4. x(4x-3)=0
   x=0 или 4x=3 x=3/4
5. y2=16
    y1=-4
    y2=4
6. 3x+12-x2-4x+x2=0
    -x=-12
    x=12