Sagot:
# y = 2x ^ 2-4x-7 #
Paliwanag:
Ang parisukat equation sa karaniwang form ay magiging tulad nito
# y = ax ^ 2 + bx + c #
Given -
# y + 9 = 2 (x-1) ^ 2 #
# y + 9 = 2 (x ^ 2-2x + 1) #
# y + 9 = 2x ^ 2-4x + 2 #
# y = 2x ^ 2-4x + 2-9 #
# y = 2x ^ 2-4x-7 #