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8 isn't a perfect square, so that can't be factored without using radicals.
As for solving it, is that equal to something?
that's what I thought but I've got to draw it as a graph
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I've only got to sketch it but I need the x intercept I think
so you need to sketch both of those and find the solution/intersection point?
ok. for the first one you can use the x-intercepts.
The second one, doesn't have x-intercepts. You can draw it using transformations. Reflect the parabola over the x-axis and shift it down 8.|dw:1443290058687:dw|
Ooh I see yes that's clever!
You can solve this algebraically as well