2 x 2 + 3 x 2 + 4 x 2
= 2 x ( 2 + 3 + 4 )
= 2 x 9
= 18
2 x 2 x 2 x 2 x 2
=4 x 4 x 2
=16 x 2
=32
Ta có:
2 x 2 + 3 x 2 + 4 x 2 =18
Đáp số: 18
\(2x2+3x2+4x2=2x\left(2+3+4\right)=2x9=18\)
\(2x2x2x2x2=32\)
2 x 2 + 3 x 2 + 4 x 2 = 4 + 6 + 8
= 10 + 8
= 18.
2 x 2 x 2 x 2 x 2 = 4 x 2 x 2 x 2
= 8 x 2 x 2
= 16 x 2
= 32.
2 * 2 + 3 * 2 + 4 * 2 = 18
2 * 2 * 2 * 2 * 2 = 32
2x2+3x2+4x2=4+6+8
=10+8
= 18
2x2x2x2x2=4x2x2x2
=8x2x2
=16x2
=32