no 7 tolong plus cara

jawab

(x² + 5x)ˣ⁺⁵ + (x + 12)ˣ⁺⁵

x+ 5 = 0
x = - 5

x² + 5x =  x + 12
x² + 4x - 12 = 0
(x + 6)(x - 2) =0
x = - 6  atau x=  2

HP ( -6, - 5, 2)

( x^2 + 5x ) ^x + 5 + ( x + 12 ) ^x + 5
x + 5 = 0
x = 0-5
x = - 5

x^2 + 5x = x + 12
x^2 + 5x - x - 12 = 0
x^2 + 4x - 12 = 0
( x + 6 ) ( x - 2 ) = 0
x = 0 - 6 atau x = 0 + 2
x = - 6 atau x = 2

Hp [ - 6 , - 5 , 2 ]