SOLUTION: Question 1 (a) Write the function f(x) = 2x ^ 2 - 7x - 10 where x ∈ R, in the form a * (x + h) ^ 2 + k_{i} where a, h, and k \in Qb) Hence, write the minimum point of f

Question 1208807: Question 1
(a) Write the function f(x) = 2x ^ 2 - 7x - 10 where x ∈ R, in the form a * (x + h) ^ 2 + k_{i} where a, h, and k \in
Qb) Hence, write the minimum point of f
(c) (i) Explain why / must have two real roots.
(ii) Write the roots of f(x) = 0 in the form p plus/minus sqrt(q) where p and q \in \mathbb{Q}
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!

The vertex here will be the lowest point of the graph
which is at (1&3/4, -16&1/8).
and .

If solve f(x) equated at 0, then you find the roots.
.

the roots
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