Question

(X+1)(2x-3)=(2x-1)(x+5). 

(X-1)^3-x(x+1)^2=5x(2-x)-11(x+2). Mình cần gấp mong các bạn giúp

Answer 1

Không có đề bài thì mình chịu!

a) \(\left(x+1\right)\left(2x-3\right)=\left(2x-1\right)\left(x+5\right)\)

\(\Leftrightarrow x+1=\frac{\left(2x-1\right)\left(x+5\right)}{2x-3}\)

\(\Leftrightarrow x=\frac{\left(2x-1\right)\left(x+5\right)}{2x-3}-1\)

b) \(\left(x-1\right)^3-x\left(x+1\right)^2=5x\left(2-x\right)-11\left(x+2\right)\)

\(\Leftrightarrow\)\(\left(x-1\right)^3=5x\left(2-x\right)-11\left(x+2\right)+x\left(x+1\right)^2\)

\(\Leftrightarrow x-1=\sqrt[3]{5x\left(2-x\right)-11\left(x+2\right)+x\left(x+1\right)^2}\)

\(\Leftrightarrow x=\sqrt[3]{5x\left(2-x\right)-11\left(x+2\right)+x\left(x+1\right)^2}+1\)

Answer 2

Dạng ax+b=0

Answer 3

Giải pt rồi đưa về dạng ax+b=0