Question

Tolong di jawab pakai caranya juga

Answer 1

 L =x²-6x+9 = (x-3)² (silahkan buktikan)
s =√L = x-3
K =4s = 4x-12
L =p.l = (5a+2)(2a-1)
= 10a²-5a+4a-2 = 10a²-a-2

Answer 2

20. L =p×l
=(5a+2)(2a-1)
=(10^2-5a+4a-2)
=10^2-a-2 (c)

19. L = s×s
(x^2-6x+9)=s×s
(x-3)(x-3)=s×s
(x-3)^2 = s^2
s =√(x-3)^2, s=(x-3)

maka k =4 × s= 4(x-3) =4x-12 (d)