nguyễn thị yến vy
2x5+4x5+6x5+8x5
= 10 + 20 + 30 + 40
= 100
2*5+4*5+6*5+8*5
= (2+4+6+8)*5
=[(2+8)+(4+6)]*5
=(10+10)*5
=20*5
=100
2x5+4x5+6x5+8x5
=(2+4+6+8)x5
=(6+6+8)x5
=(12+8)x5
=20x5
=100
2*5+4*5+6*5+8*5
=5*(2+4+6+8)
=5*20
=100
2 * 5 + 4 * 5 + 6 * 5 + 8 * 5 = ?
= [ 2 + 4 + 6 + 8 ] * 5
= 20 * 5
= 100
Thử lại rùi nha ,đúng luôn
2x5+4x5+6x5+8x5= 5x ( 2+4+6+8)
= 5 x 20
= 100
2x5+4x5+6x5+8x5= 5x ( 2+4+6+8)
= 5 x 20
= 100
\(2.5+4.5+6.5+8.5\)
\(=5.\left(2+4+6+8\right)\)
\(=5.20\)
\(=100\)