A:have access to
B:look up to
C:draw attention to
D:belong to
阅读下列多项式因式分解的过程:
x2﹣2x﹣8=x2﹣2•x•1+12﹣12﹣8=(x﹣1)2﹣9=(x﹣1)2﹣32=(x﹣1+3)(x﹣1﹣3)=(x+2)(x﹣4)
这种把多项式分解因式的方法叫做“配方法”,请你根据上面的材料解答下列问题:
—Shall we have a smoke here?
—No, we _____ because this is gas station and the worker is carrying some petrol.
420×2=____
230×3=____
700×5=____
4000×2=____