Sagot:
# x = 5 ## "o" ## x = 1 #
Paliwanag:
# (a + b) ^ 2 = a ^ 2 + 2ab + b ^ 2 #
Gamitin ang parehong patakaran
# (x-3) ^ 2 = x ^ 2 + 2 (x) (- 3) + (- 3) ^ 2 #
# = x ^ 2-6x + 9 #
ngayon Kapalit
# x ^ 2-6x + 9 + 8 = 12 #
# x ^ 2-6x + 5 = 0 #
Factorize
# (x-5) (x-1) = 0 #
# x = 5 ##' '## x = 1 #