Question

Giúp mình vs Ạ

Answer 1

g: \(\Leftrightarrow\dfrac{2x+5}{95}+1+\dfrac{2x+6}{94}+1+\dfrac{2x+7}{93}+1=\dfrac{2x+93}{7}+1+\dfrac{2x+94}{6}+1+\dfrac{2x+95}{5}+1\)

=>2x+100=0

hay x=-50

e: \(\Leftrightarrow3\left(2x+1\right)=6\left(2x+1\right)+8\)

=>12x+6+8=6x+3

=>12x+14=6x+3

=>6x=-11

hay x=-11/6(nhận)

f: \(\Leftrightarrow\left(x-1\right)\left(x-2\right)\left(x-4\right)\left(x-5\right)=40\)

\(\Leftrightarrow\left(x^2-6x+5\right)\left(x^2-6x+8\right)=40\)

\(\Leftrightarrow\left(x^2-6x\right)^2+13\left(x^2-6x\right)=0\)

=>x(x-6)=0

=>x=0 hoặc x=6