Question

( 3x + 1 ) ( x - 4 ) - ( x + 2 ) ( x - 3 ) = ( 2x + 5 ) x Giúp tớ tính với

Answer 1

$\sf \bf {\boxed {\mathbb {x\:=\:0.1333}}}$

$\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\red{:}}}}}$

$(3x + 1)(x - 4) - (x + 2)(x - 3) = (2x + 5)x$

$➺\: 3x \: (x - 4) + 1 \: (x - 4) - x \: (x - 3) - 2 \: (x - 3) = (2x + 5) \: x$

$➺\: 3 {x}^{2} - 12x + x - 4 - {x}^{2} + 3x - 2x + 6 = 2 {x}^{2} + 5x$

$➺\: 2{x}^{2} - 2 {x}^{2} - 10x - 5x + 2= 0$

$➺\: - 15x = - 2$

$➺ \: x = \frac{ - 2}{ - 15}$

$➺ \: x = \frac{2}{15}$

$➺\: x = 0.1333$

$\huge\bf\purple{*Mystique 35♡༉}$