A:how we have swiftly affected
B:that how swiftly we have affected
C:how swiftly we have affected
D:however swiftly we have affected
已知(m2﹣1)x2﹣(m+1)x+8=0是关于x的一元一次方程,求代数式mx的值.
某学校七年级的一次历史探究与实践课上,老师围绕主题出示了如图片材料,由此可知其探究的主题应是( )