1); x=2
2); x= 6
3)
-13x+16=16-8x
-13x+8x=0
-5x=0
x=0
4)5х-15-2х+14=7-14х-42;
17x=-34;
x=-2
5)40x-5-28x-7=9-56+32x;
-20x=-35;
x= 1,75
1) x(x+2)-(x-3)(x+3)=13
x^2+2x-x^2+9-13=0
2x-4=0
x=4/2
x=2
2) 4x(x-1)-(2x+5)(2x-5)=1
4x^2-4x-4x^2+25-1=0
-4x+24=0
x=24/4
x=6
3) (x-3)(x+4)-2(3x-2)=Не дописали уравнение.
4) 5(x-3)-2(x-7)=7-7(2x+6)
5x-15-2x+14-7+7*(2x+6)=0
3x-8+14x+42=0
17x+34=0
x=-34/17
5) 5(8x-1)-7(4x+1)=9-8(7-4x)
40x-5-28x-7-9+8*(7-4x)=0
12x-21+56-32x=0
-20x+35=0
x=35/20
x=1.75
1)
; x=2
2)
; x= 6
3)
-13x+16=16-8x
-13x+8x=0
-5x=0
x=0
4)5х-15-2х+14=7-14х-42;
17x=-34;
x=-2
5)40x-5-28x-7=9-56+32x;
-20x=-35;
x= 1,75
1) x(x+2)-(x-3)(x+3)=13
x^2+2x-x^2+9-13=0
2x-4=0
x=4/2
x=2
2) 4x(x-1)-(2x+5)(2x-5)=1
4x^2-4x-4x^2+25-1=0
-4x+24=0
x=24/4
x=6
3) (x-3)(x+4)-2(3x-2)=
Не дописали уравнение.
4) 5(x-3)-2(x-7)=7-7(2x+6)
5x-15-2x+14-7+7*(2x+6)=0
3x-8+14x+42=0
17x+34=0
x=-34/17
x=-2
5) 5(8x-1)-7(4x+1)=9-8(7-4x)
40x-5-28x-7-9+8*(7-4x)=0
12x-21+56-32x=0
-20x+35=0
x=35/20
x=1.75