SOLUTION: Suppose that r1 and r2 are the roots of the quadratic equation ax2 + bx + c = 0.
Note that:
(x – r1)(x – r2)= x2 – (r1 + r2)x + r1r2.
Explain how to use this result to chec
Algebra ->
Quadratic Equations and Parabolas
-> SOLUTION: Suppose that r1 and r2 are the roots of the quadratic equation ax2 + bx + c = 0.
Note that:
(x – r1)(x – r2)= x2 – (r1 + r2)x + r1r2.
Explain how to use this result to chec
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Question 284790: Suppose that r1 and r2 are the roots of the quadratic equation ax2 + bx + c = 0.
Note that:
(x – r1)(x – r2)= x2 – (r1 + r2)x + r1r2.
Explain how to use this result to check the solutions of a quadratic equation of the form x2 + bx + c. Then use the result to check that –3 + 2i and –3 – 2i are solutions of the equation x2 + 6x + 13 =0.
