PROOF 19
Prove.
The quadratic formula
On the reals ℝ.
Definition D1
A root of ax² + bx + c = 0 (a ≠ 0) is a real number x for which substitution makes the equality hold.
Proof.
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PROOF 19
The quadratic formula
On the reals ℝ.
Definition D1
A root of ax² + bx + c = 0 (a ≠ 0) is a real number x for which substitution makes the equality hold.
Proof.
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