（1）先化简，再求值：a（a﹣2b）+（a+b）²，其中a=﹣1，b=$\sqrt{2}$．

（2）解不等式组：$\left\{\begin{array}{c}4x>2x-6\\ \frac{x-1}{3}⩽\frac{x+1}{9}\end{array}\right.$.

A: Hi, Grace.

B: Hi, Tom. ____?

A: My favorite sport is tennis. What about you?

B: I don't like tennis. I like soccer best.

A: ____?

B: Because it's exciting and interesting.

A: Do you play it a lot?

B: ____. I play it three times a week.

A: ____?

B: I play it in my P.E class. We have there P.E. classes a week.

A. That's cool ____.

B: OK.We can meet at my school about 4:00. See you there.

停车场有小汽车24辆，如果小汽车的数量比大汽车的2倍还多4辆，大汽车有（   ）