你可能感兴趣的试题
a(a﹣4) (a+2)(a﹣2) a(a+2)(a﹣2) (a﹣2)2﹣4
a(x-2) ² a(x+2) ² a(x-4)² a(x-2) (x+2)
=SUM(A2:A21) =STDEVP(A2:A21) =MODE(A2:A21) =AVERAGE(A2:A21)
y(x+2)(x﹣2) y(x+4)(x﹣4) y(x2﹣4) y(x﹣2)2
y(x+2)(x﹣2) y(x+4)(x﹣4) y(x2﹣4) y(x﹣2)2
a(a-4) (a+2)(a-2) a(a+2)(a-2) (a-2)2-4
a(x﹣2)2 a(x+2)2 a(x﹣4)2 a(x+2)(x﹣2)
a(x﹣2)2 a(x+2)2 a(x﹣4)2 a(x+2)(x﹣2)
a(a-4) (a+2)(a-2) a(a+2)(a-2) (a-2)2-4
a(x﹣2)2 a(x+2)2 a(x﹣4)2 a(x﹣2)(x+2)
a2+4a﹣21=a(a+4)﹣21 a2+4a﹣21=(a﹣3)(a+7) (a﹣3)(a+7)=a2+4a﹣21 a2+4a﹣21=(a+2)2﹣25
a(x﹣2)2 a(x+2)2 a(x﹣4)2 a(x+2)(x﹣2)
SUM(A2:A21) MEDIAN(A2:A21) MODE(A2:A21) AVERAGE(A2:A21)
a2+4a-21=a(a+4)-21 a2+4a-21=(a-3)(a+7) (a-3)(a+7)=a2+4a-21 a2+4a-21=(a+2)2-25