Question

[quynh tong ngoc]

3x3+4x3+5x3+6x3+7x3+15x3

ai tick mk mk k lại cho 

mk hứa

Answer 1

[quynh tong ngoc]

3x3+4x3+5x3+6x3+7x3+15x3

=3x(3+4+5+6+7+15)

=3x/(3+7)+(5+15)+(6+4)/

=3x(10+20+10)

=3x40

=120

Answer 2

[sakura]

3 x 3 + 4 x 3 + 5 x 3 + 6 x 3 + 7 x 3 + 15 x 3 = 120