I : CMR

a) (ab+1)^2 \(\ge\)\(\frac{4}{ab}\)

b) \(\left(ab+2\right)^2\le\left(a^2+1\right)\left(b^2+4\right)\)

c) \(2\left(4a^2+b^2\right)\ge\left(2a+b\right)^2\)

d) \(x^5+y^5\ge xy\left(x^3+y^3\right)\) với x , y >0

help me !!!

I : dùng từ gợi ý vt thành câu hoàn chỉnh

1: Our school / hold / flower-aranging contest / March 8\(^{th}\) every year

2: Two girls / have / make / fire / rub / pieces / bamboo / together

3: People / believe / well - paying jobs / plentifl / city

4: primary / each / they / long / have / known / since / other / school / for / a / time / when / were / at / they (sắp xếp )

5: the / to / the / bleeding / by / a / of / stop / cloth / over / try / wound / holding / piece (sắp xếp )

6: not /,/ most / are / harmless/ serious / fortunately / headaches / and /./ ( sắp xếp )

7 : other / pain / an / or / any / asprin / tablets / kill / the / to / take /./ ( sắp xếp )

8: nowadays / a / inventions / are / carried / of / out / lot / by / scientists / wonderful/./

các bn ơi lm ơn giúp mình vs !!!

mik cảm ơn

I : sắp xếp

1: concerned / months / a / residents / the / owners / neww / have / about / mall / store / for / few / and / the / been

2: that / the / waste / local / company / not / about / will / authorities / are / investigate / pleased / their / they / treating

3: for / the / recycling / materials / natural / helps / important / conserve / raw / and / future / habitats / protects

4: me / told / contest / take / in / the / day / she / would / she / cooking / following / rice / part / the

5: better / bad / purpose / lives / any / good / make / although / the / our / inventions / or / to / of / is

6: made / the / empty / by / was / to / youth / his / poloce / pocket / the /./

7: It / be / vital / we / protect / animals / hunt / fur / valuable / part / bodies ( thêm từ )

các bn ơi giúp mình với mai mình thi rùi

huhuhhhhhhh!!!!

I : Cho PT

\(mx^3+2mx^2-mx-2m=0\) (3) ẩn x

a) giải PT (3)

b) Tìm m để PT (3) có 3 nghiệm phân biệt

I : Cho PT

\(\dfrac{2x-m}{x-2}+\dfrac{x-1}{x+2}=3\) (2) ( ẩn x )

a) Giải (2) khi m=3

b) Tìm m để PT có nghiệm duy nhất

c) Với giá trị nào của m thì PT luôn có nghiệm

help me !!!

I : Cho PT :

\(\dfrac{x-a}{3}+2=\dfrac{x+3}{a}\)(1)

a) Giải (1) khi a=3

b) Tìm a để PT có nghiệm duy nhất là số dương

c) Tìm a để PT (1) nhận x=2 là nghiệm

help me !!!

I : giải các phương trình

a) \(\dfrac{x-1}{a}+\dfrac{2}{x+1}=\dfrac{x^2-2ax-1}{a\left(x+1\right)}\)(ẩn x )

b) \(4x^2+4mx+m^2-25=0\)

help me !!!