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222
y=a(xโh)2+ky = a(x - h)^2 + ky=a(xโh)2+k
(h,k)(h, k)(h,k)
x=โb2ax = -\frac{b}{2a}x=โ2abโ
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ฮ=b2โ4ac\Delta = b^2 - 4acฮ=b2โ4ac
Two distinct real solutions
One repeated real solution
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