If one root of the equation x 2 + P x + 84 = 0 x^2 + Px + 84 = 0 x 2 + P x + 84 = 0 is − 21 -21 − 21 , then how much greater is the value of P P P tha...

Question

If one root of the equation

x2+Px+84=0x^2 + Px + 84 = 0
is
21-21
, then how much greater is the value of
PP
than the other root of the equation?

Options

A.

$14$

B.

$12$

C.

$25$

D.

$27$

E.

$29$

quadratic equationrootsalgebrarbi grade b

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