分解因式:x2+2x-3=______.
x2+2x-3=(x+3)(x-1).
故答案为:(x+3)(x-1).
I’ve never seen ___ you.
A.a such man like
B.a such man as
C.such a man as
D.such a man like
水泥粉煤灰碎石桩施工前要进行工艺性试验,施工后要做()试验
A、低应变、平板荷载
B、抽芯
C、平板荷载
D、原材料抽检