Question

86x99+86=?（简便运算）

怎么写啊？帮帮我啊！！！

Answer 1

86×99+86
＝86×99+86×1
＝（99+1）×86
＝100×86
＝8600
86x99+86
=86x(99+1)
=86x100
=8600

Answer 2

86x99+86
=86x(99+1)
=86x100
=8600

Answer 3

86*(99+1)

Answer 4

89×99+86
=89×99+86×1
=89×（99+1)
=89×100
=8900