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4. For each quadratic relation,
i. express the relation in factored form
ii. find the coordinates of the vertex
iii. express the relation in vertex form
iv. sketch the graph
(a) y = x² - 6x +5
(c) y = x²+x-4
(e) y=-3x² - 12x
(b) y = -2x² + 12x-16
(d) y = 4x² - 12x + 5
(f) y = 2x² - 4x - 30
do at least 1 for me​