This shouldn't be as hard as the last Quadratic, but it's still confusing. 4x^2 + y^2 = 20 and y = 4x So, 4x^2 + 4x = 20 4x^2 + 4x - 20 = 0 How do I get it factored or simplified?
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It should be . So .
That doesn't seem right. It should turn out as two sets of coordinate solutions. It's supposed to be a quadratic system that you have to solve.
Plug in the values. You should get and .
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