Question

b ) \(\left(2x-5\right)\left(x-3\right)=2x^2+2004\)

Answer 1

\(\left(2x-5\right)\left(x-3\right)=2x^2+2004\)

\(2x^2-6x-5x+15=2x^2+2004\)

\(2x^2-11x+15=2x^2+2004\)

\(2x^2-2x^2-11x=2004-15\)

\(-11x=1989\)

\(x=1989:-11\)

\(x=-\frac{1989}{11}\)

Answer 2

\(\left(2x-5\right)\left(x-3\right)=2x^2+2004\)

\(\Rightarrow2x^2-6x-5x+15=2x^2+2004\)

\(\Rightarrow\left(2x^2-2x^2\right)-\left(6x+5x\right)=2004-15\)

\(\Rightarrow-11x=1989\)

\(\Rightarrow x=-\frac{1989}{11}\)

Answer 3

Số lướn không biết đúng không nữa