Đáp án+Giải thích các bước giải:
`a)` Ta có :
`|3| = 3`
`|-3| = 3`
`=>` Đúng
`b)` Ta có :
`|-(-3/2)| = |3/2| = 3/2`
`|-3/2| = 3/2`
`c)` Ta có :
`-|-1/5| = -1/5`
`|-1/5| = 1/5`
`=>` Sai
`d)` Ta có :
`|-(-4/7)| = |4/7| = 4/7`
`-|-4/7| = -4/7`
Bài `5:`
a) Đúng
b) Đúng
c) Sai
d) Sai
GT: Ta có:
`a) |3|=3`
`|-3|=3`
`b) |-((-3)/2)|=3/2`
`|-3/2|=3/2`
`c) -|-1/5|=-1/5`
`|-1/5|=1/5`
`d) |-(-4/7)|=4/7`
`-|-4/7|=-4/7`
a) (3x^2-2x-4)(2x+5)-(3x-4)^2 b)(3x^2-4x-5)(4x-6)-(2x+4)(2x-4)
Mn giúp mình với,mình cần gấp ạ
IV. Rewrite sentences, using “I wish………..” 6. I really regret not working hard last year =>I wish …….…………………………………………… 7. My best friend regreted not buyin the house she liked last year =>My best friends wishes………………………… 8. They didn’t join Mary’s party and now they regret about it => I wish…………………………………………………… 9. Lan told her friend a lie and she felt sorry =>Lan wish …………………………………. 10. I am sorry I am late => I wish ……………………………………. Giúp mình nha mk vốt 5* ??? Uy tín nha
vẽ con chó bông màu trắng, đẹp ctlhn
(x+11)+(x+13)+(x+15)+...+(x+25)+(x+27)=189
Vẽ bức tranh về chủ đề '' hoa quả '' nha. Lưu ý : KO CHÉP MẠNG !!!
Calli : tèo teo Nl : Tưởng niệm giây phút tưởng niệm kỉ lục cụa Heo Dù top 3 thoi nhưng đủ làm mk mãn nguyện
I still remember my first day of school like it just happened yesterday, and it was one of the best days of my life. I live in a countryside, so my elementary school is a small and really old building. That day was on the beginning of September, and I had prepared for it all summer. Both of my parents took me to school at a very early time in the morning, and I were so excited that I could not sleep the night before. I went by that school many times, but that was the first time that I could actually get into and observe everything. My first teacher was also my aunt, and she took a really good care of me. She arranged me to sit at the first table because I was shorter than my friends. I could not make any friends that day, and later I was so sad about it. The first day always be the most impressive day, and I still remember every detail of it. Now I am in highschool, but that sweet memory is always in my heart. DỊCH
Tính số mol 5,6g Fe, 22g CO₂; 4g Fe(SO₄)₃; 1,8g H₂O Các khí đó ở điều kiện tiêu chuẩn 4,48l N₂; 13,44 ml O₂
Với mệnh đề P: “Tôi giỏi toán”, Q: “Tôi khá lí”. Mệnh đề phủđịnh của P Q là: a, Tôi không khá lí thì tôi không giỏi toán b, Tôi không giỏi toán hay tôi khá lí c, Tôi giỏi toán hay tôi không khá lí d, Tôi giỏi toán thì tôi không khá lí e, Tôi giỏi toán và tôi không khá Lý
Loga.vn - Cộng Đồng Luyện Thi Trực Tuyến
