Basitleştirin (x-2) / (x ^ 2 + 6x + 9) - (x + 2) / (2x ^ 2-18)?

Basitleştirin (x-2) / (x ^ 2 + 6x + 9) - (x + 2) / (2x ^ 2-18)?
Anonim

Cevap:

# (X ^ 2-15x + 6) / (2, (x-3) (x + 3) ^ 2) #

Açıklama:

# X, ^ 2 + 6x + 9 = (x + 3) (x + 3) = (x + 3) ^ 2 #

# 2 x ^ 2-18 = 2 (x ^ 2-9) = 2, (x-3) (x + 3) #

2 karenin farkı # (A-b) (a + b) ^ 2-b ^ 2 # =

#, (X-2) / (x + 3) ^ 2- (x + 2) / (2, (x-3) (x + 3)) #

İle çarp 2. (x-3), (x + 3) ^ 2 #

= # ((X-2), (2), (x-3) - (x + 2) (x + 3)) / (2, (x-3) (x + 3) ^ 2) #

Parantezleri genişletin

= # (2 (x ^ 2-5x + 6) - (x ^ 2 + 5x + 6)) / (2, (x-3) (x + 3) ^ 2) #

Daha fazla destekleri genişletin

= # (2x ^ 2-10x +12 x ^ 2-5x-6) / (2, (x-3) (x + 3) ^ 2) #

basitleştirmek

= # (X ^ 2-15x + 6) / (2, (x-3) (x + 3) ^ 2) #