（x+2）（y-3）=______．

请仔细阅读下列短文并改正其中的10个错误。

Recently, students in our class have had a discussion on whether space is worthy exploring.

30% of us thinks space exploration is not worthwhile. They think space is so far away from us and our daily life. And the money spending on space exploration can be used to solve the earth problems such as starvation and pollution.

In the other hand, 70% think that space worth exploring because we have benefited a lot for it, such as using satellites for communication and to weather forecast. What’s more, with further space research, we may solve the population problem by moving to other planets one day. Also, space research will enable us to find new sources to solve the problem of energetic shortages on the earth.