MORE PRACTICE

Here are a few more practice problems. This next one illustrates the interplay between geometry and algebra.

PRACTICE 1:

a) Solve \(x^2+10x+30=0\) and see what happens when you try.

b) Sketch the graph of \(y=x^2+10x+30\).

c) Use the graph to explain what happened in part a).

d) Will \(x^2+10x+30=11\) have a solution? If so, how many solutions?

e) For which value(s) \(k\) does \(x^2+10x+30=k\) have only one solution?

READ MORE HERE: QUADRATICS PD Essay 6.4

(See too Edfinity.com/XXX for a robust source of curriculum practice problems for you collate, organise, and use.)

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