=180+144-216+144
=144+(216-180)
=144+36
=180
Đ/S : 180
36 x 5 + 72 x 2 - 216 + 144
= 36 x 5 + 36 x 2 x 2 - 36 x 6 + 36 x 4
= 36 x ( 5 + 2 + 2 - 6 + 4 )
= 36 x 5
= 180
\(36\times5+72\times2-216+144\)
\(=36\times5+36\times2\times2+36\times6+36\times4\)
\(=36\times\left(5+2+2+4-6\right)\)
\(=36\times7\)
\(=242\)