2X+4（8-X）=20 10X-6（10-X）=36 10X-6（16-X）=64 0.5X+0.1（8-X）=2 4X-2（8-X）=14
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分解因式(x-2)(x-4)(x-6)(x-8)+16=~
2. 10x-60+6x=36 16x=96 x=6
3. 10x-96+6x=64 16x=160 x=10
4. 先都乘上10 5x+8-x=20 4x=12 x=3
5. 4x-16+2x=14 6x=30 x=5
1.2x+32-4x=20
4x-2x=32-20
2x=12
x=6
2.10x-60+6x=36
16x=96
x=6
2x+32-4x=20
4x-2x=32-20
2x=12
x=6
2X+4（8-X）=20
2x+32-4x=20
-2x+12=0
x=6
10X-6（10-X）=36
10x-60+6x=36
16x=96
x=6
10X-6（16-X）=64
10x-96+6x=64
16x=160
x=10
0.5X+0.1（8-X）=2
0.5x+0.8-0.1x=2
0.4x=1.2
x=3
4X-2（8-X）=14
4x-16+2x=14
2x=30
x=15
原式=[(x-2)(x-8)][(x-4)(x-6)]+16
=[(x²-10x)+16][(x²-10x)+24]+16
=(x²-10x)²+40(x²-10x)+384+16
=(x²-10x)²+40(x²-10x)+400
=(x²-10x+20)²
10x-6×(16-x)=16
10x-96+6x=16
16x=112
x=7
2. 10x-60+6x=36 16x=96 x=6
3. 10x-96+6x=64 16x=160 x=10
4. 先都乘上10 5x+8-x=20 4x=12 x=3
5. 4x-16+2x=14 6x=30 x=5
1.2x+32-4x=20
4x-2x=32-20
2x=12
x=6
2.10x-60+6x=36
16x=96
x=6
2x+32-4x=20
4x-2x=32-20
2x=12
x=6
2X+4（8-X）=20
2x+32-4x=20
-2x+12=0
x=6
10X-6（10-X）=36
10x-60+6x=36
16x=96
x=6
10X-6（16-X）=64
10x-96+6x=64
16x=160
x=10
0.5X+0.1（8-X）=2
0.5x+0.8-0.1x=2
0.4x=1.2
x=3
4X-2（8-X）=14
4x-16+2x=14
2x=30
x=15
