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Những câu hỏi liên quan
22 tháng 1 2023
Bài 5:
a: \(=\dfrac{a+2\sqrt{a}+a-2\sqrt{a}}{a-4}\cdot\dfrac{a-4}{2\sqrt{a}}=\dfrac{2a}{2\sqrt{a}}=\sqrt{a}\)
b: Để A-2>0 thì căn a-2>0
=>căn a>2
=>a>4
c: Để 4/A+1 là số nguyên thì \(\sqrt{a}+1\inƯ\left(4\right)\)
=>\(\sqrt{a}+1\in\left\{1;2;4\right\}\)
=>\(a\in\left\{1;9\right\}\)
28 tháng 6 2023
a: =3/2-2/3:(4/18+3/18)
=3/2-2/3:7/18
=3/2-2/3*18/7
=3/2-12/7
=-3/14
b: =(5/8-1/5)*2-1/4
=5/4-2/5-1/4
=1-2/5=3/5
c: =(3+5/6-1/2):55/12
=10/3*12/55
=8/11
8 tháng 12 2021
a: Xét tứ giác AEMF có
\(\widehat{MEA}=\widehat{MFA}=\widehat{FME}=90^0\)
Do đó: AEMF là hình chữ nhật
CC
8 tháng 12 2021
a)Tứ giác AEMF có :
\(\widehat{MEA}=\widehat{MFA}=\widehat{FME}=90^0\)
=>AEMF là hình chữ nhật
DT
Đỗ Thanh Hải
CTVVIP
5 tháng 7 2021
1 are
2 am
3 is
4 are
5 are
6 are
7 is
8 is
9 is
10 are
IV
1 is writing
2 are losing
3 is having
4 is staying
5 am not lying
6 is always using
7 are having
8 Are you playing
9 are not touching
10 Is - listening
11 Is- winning
12 am not staying
13 is not working
14 is not reading
15 isn't raining
16 am not listening
17 Are they making
18 Are you doing
19 Is - sitting
20 is - doing
21 are-putting
22 are-wearing
23 is-studying
5 tháng 7 2021
2, am
3, is
4,are
5,are
6,are
7,is
8,is
9,is
10,are
IV
1,2,7 OK
3,is having
4,has stayed
5,am not lying
6,always uses
8,Are-playing
9,not to touch
10,Is-listening
11,Are-winning
12,am not staying
13,isn't working
14,isn't reading
15,isn't raining
16,am not listening
17,Are-making
18,Are-doing
19,Is-sitting
20,is-doing
21,do-putting
22,do-wear
23,is-studying
AD
0
DT
Đỗ Thanh Hải
CTVVIP
2 tháng 7 2021
2 do
3 usually buy
4 press
5 enjoy
6 has
7 goes
8 gets
9 eat
10 doesn't study
11 doesn't eat
12 doesn't water
13 don't go
14 doesn't eat - is
15 Do - go
16 Do - agree
17 Do you have
18 Do you often eat
19 Does - start
20 does he come
21 does - work
22 does
23 does - do
24 does- go
