Give a proof for the following.
∀ a ∈ R^∗ , (b,c) ∈ R , x ∈ C :
ax^2 + bx + c
= a(x−((−b − (√(b^2 −4ac)))/(2a)))(x−((−b + (√(b^2 −4ac)))/(2a)))
To answer, I should not expand from the
second equation but I should start from the
first one.
How may I do ? Thank you.
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