Asked by Moyer
Consider the general quadratic eqaution in standard form, ax^2 + bx + c = 0. Let a = 1 and the roots be r1 and r2. Expand (x - r1) (x - r2).
Write both algebraic expressions for and descriptions in words of b and c in terms of r1 and r2.
Write both algebraic expressions for and descriptions in words of b and c in terms of r1 and r2.
Answers
Answered by
Damon
x^2 - r1 x - r2 x + r1 r2
b = -(r1+r2)
c = r1 r2
b = -(r1+r2)
c = r1 r2
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