Question

5*(x-3)+(x-2)*(5x-1)

Giải giúp mình, cảm ơn

Answer 1

=5x^2 nx nha ^^

Answer 2

Mình ghi thiếu

Answer 3

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

\(\Leftrightarrow5x-15+5x^2-x-10x+2-5x^2=0\)

\(\Leftrightarrow-6x-13=0\)

\(\Leftrightarrow6x+13=0\)

\(\Leftrightarrow x=-\frac{13}{6}\)

Vậy \(x=-\frac{13}{6}\)

Answer 4

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

\(\Rightarrow5x-15+5x^2-x-10x+2=5x^2\)

\(\Rightarrow5x-15+5x^2-x-10x+2-5x^2=0\)

\(\Rightarrow-6x-13=0\)

\(\Rightarrow-6x=0+13\)

\(\Rightarrow-6x=13\)

\(\Rightarrow x=13:\left(-6\right)\)

\(\Rightarrow x=-\frac{13}{6}\)

Vậy \(x=-\frac{13}{6}.\)

Chúc bạn học tốt!