Question

rezolva ecuatia (x+5)(x+3)=(x-1)(x+7)+10

Answer 1

x²+3x+5x+15 = x²+7x-x-7+10

x²+8x+15 = x²+6x+3

x²+8x-x²-6x = 3-15

2x = -12

x = -12:2

x = -6

Answer 2

(x+5)(x+3)=(x-1)(x+7)+10

x²+3x+5x+15=x²+7x-x-7+10

x²+8x+15=x²+6x+3

8x+15=6x+3

8x+15-6x=3

2x+15=3

2x=3-15=-12

$x = - \frac{12}{2} = - 6$