1 |
x+2 |
1 |
x+7 |
1 |
x+3 |
1 |
x+6 |
故
1 |
x+2 |
1 |
x+7 |
1 |
x+3 |
1 |
x+6 |
1 |
x+2 |
1 |
x+3 |
1 |
x+6 |
1 |
x+7 |
即
1 |
(x+6)(x+7) |
1 |
(x+2)(x+3) |
所以(x+6)(x+7)=(x+2)(x+3).
x=-
9 |
2 |
經(jīng)檢驗(yàn)x=-
9 |
2 |
x+1 |
x+2 |
x+6 |
x+7 |
x+2 |
x+3 |
x+5 |
x+6 |
1 |
x+2 |
1 |
x+7 |
1 |
x+3 |
1 |
x+6 |
1 |
x+2 |
1 |
x+7 |
1 |
x+3 |
1 |
x+6 |
1 |
x+2 |
1 |
x+3 |
1 |
x+6 |
1 |
x+7 |
1 |
(x+6)(x+7) |
1 |
(x+2)(x+3) |
9 |
2 |
9 |
2 |