Graphic: y-k=a(x-h)²
STEP by STEP please
h(x) = 1/2X^2 + X + (1/2)^2 1/2 - (1/2)^2 (add half the value of X to 1/2X^2 and take it from the 1/2)
h(x) = 1/2(X + 1)^2 +1/2 - 1/4 (convert to squared form by removing the X from equation)
h(x) = 1/2(X + 1)^2 +1/4 (simplify)
take the (k) value to the other side:
y-1/4 = 1/2(X + 1)^2
h(x) = 1/2(x+1)^2
so k = 0, a = 1/2, h = -1
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h(x) = 1/2X^2 + X + (1/2)^2 1/2 - (1/2)^2 (add half the value of X to 1/2X^2 and take it from the 1/2)
h(x) = 1/2(X + 1)^2 +1/2 - 1/4 (convert to squared form by removing the X from equation)
h(x) = 1/2(X + 1)^2 +1/4 (simplify)
take the (k) value to the other side:
y-1/4 = 1/2(X + 1)^2
h(x) = 1/2(x+1)^2
so k = 0, a = 1/2, h = -1