Tìm GTNN của biểu thức

P = 2x\(^2\) +4y\(^2\) -4xy - 2x - 4y + 2019

HELP ME

Tìm x

x^3-(2x-3)(4x^2+6x+9)+7x(x^2-x+1)-13=0

Ai nhannh mk tick cho !!!

HELP ME

Viết câu sao cho nghĩa ko đổi :

1. ^{That is not his invention <=> That invention ..................................................................}

^{2. These are 4 picture <=> These pictures ............................................................................}

^{3. We were so interested in the comedy that we laughed from beginning to end <=> The comdy ............................................................................................................................................}

^{4. Your bicycle is just like the one I used to own ( use : similar ) <=> I .........................................................................................................................................................}

Giúp mình nha mai mình thi rồi

Ai nhanh mình tick cho

\(\dfrac{1}{2.4}\)+\(\dfrac{1}{4.6}\)+ ..........+ \(\dfrac{1}{\left(2x-2\right).2x}\)= \(\dfrac{1}{8}\)( x thuộc N ; x lớn hơn hoặc bằng 2)