Question

tìm x bt :

\(2x\left(12x-5\right)-8x\left(3x-1\right)=30\)

Answer 1

\(2x\left(12x-5\right)-8x\left(3x-1\right)=30\)

\(\Leftrightarrow24x^2-10x-24x^2+8x=30\)

\(\Leftrightarrow-2x=30\)

\(\Leftrightarrow x=-15\)

Answer 2

<br class="Apple-interchange-newline"><div></div>2x(12x−5)−8x(3x−1)=30

<=>\(24x^2-10x-24x^2+8x=30\)

<=>\(-2x=30\)

<=>\(x=30:\left(-2\right)\)

<=>\(x=-15\)

Answer 3

Bài làm :

\(2x\left(12x-5\right)-8x\left(3x-1\right)=30\)

\(\Leftrightarrow24x^2-10x-24x^2+8x=30\)

\(\Leftrightarrow-10x+8x=30\)

\(\Leftrightarrow-2x=30\)

\(\Leftrightarrow x=30:\left(-2\right)\)

\(\Leftrightarrow x=-15\)

Học tốt

Answer 4

2x( 12x - 5 ) - 8x( 3x - 1 ) = 30

<=> 24x² - 10x - 24x² + 8x = 30

<=> -2x = 30

<=> x = -15

Answer 5

\(2x\left(12x-5\right)-8x\left(3x-1\right)=30\)

\(24x^2-10x-24x^2+8x=30\)

\(-2x=30\)

\(x=-15\)

Answer 6

             Bài làm :

Ta có :

2x( 12x - 5 ) - 8x( 3x - 1 ) = 30

<=> 24x² - 10x - 24x² + 8x = 30

<=> -2x = 30

<=> x = -15

Vậy x=-15