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Verified answer
JawabPersamaan fungsi kuadrat
P(p,q) --> y = a(x - p)² + q
P(2,1) --> y = a(x - 2)² + 1
melalui
(3,0) --> 0 = a(3-2)² + 1
0 = a+ 1
a = - 1
y = a( x - 2)² + 1 dengan a = -1
y = - (x² -4x + 4) + 1
y = - x² + 4x - 4 + 1
y = - x² + 4a - 3