maths
4x^2+12xy-10+9y^2-49z^2+42z+1
回答 (1)
✔ 最佳答案
1. $p +$12 = $120
$P=$120-$12
= $108
2. 1 5/6 x 1/3 -:- 4/9
=11/6 x 1/3 x 9/4
=11/8
=1 3/8
3. 2/7 -:- ( 3/5 x 1/6 )
= 2/7 -:- (1/10)
=2/7 x 10/1
=20/7
=2 6/7
4. 1 1/4 x 12
=5/4 x 12
=15
收錄日期: 2021-04-26 13:15:42
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