Question

tìm x : (x+2)(x+3) -(x-2)(x+5)=6

Answer 1

(x+2)(x+3) -(x-2)(x+5)=6

=>x²+5x+6-x²-3x+10=6

=>(x²-x²)+(5x-3x)+(10+6)=6

=>2x+16=6

=>2x=-10

=>x=-5

Answer 2

(x + 2) (x + 3) - (x - 2) (x + 5) = 6

<=> x² + 5x +6 - x² - 3x + 10 = 6

<=> 2x + 16 = 6

<=> 2x = -10

<=> x = -5