Question

tính nhanh

a) 43,57 *2,6 * (630-315*2)

Answer 1

a) 43,57 * 2,6 * (630 - 630)

= 43,57 * 2,6 * 0 = 0

Answer 2

= 43.57 * 2.6 * (630 - 315 * 2 )

= 43.57 * 2.6 *( 630 - 630 )

= 43.57 * 2.6 * 0 

= 0