Question

me pueden ayudar con estas ecuaciones​

Answer 1

(x + 5/2)•(x + 3/2) - (x + 5)•(x - 3)

= 3(3 + 1)

x^2 + 3/2x + 5/2x + 15/4 - [ x^2 - 3x + 5x - 15 ] = 3(4)

x^2 + 8/2x + 15/4 - [ x^2 + 2x - 15 ] = 12

x^2 + 4x + 15/4 - x^2 - 2x + 15 = 12

x^2 - x^2 + 4x - 2x + 15/4 + 15 = 12

2x + 75/4 = 12

2x = 12 - 75/4

2x = - 27/4

x = ( - 27/4 ) / ( 2/1 )

x = - [ (27)(1) / (4)(2) ]

x = - 27/8