if x=2 is a root of ax^2 - bx -x = 0, state the relationship connecting a,b, c and show that x=2 is also a root of(adsbygoogle = window.adsbygoogle || []).push({});

bx^2 + cx - 8a = 0.

the answer for the first part of the question is

4a - 2b - c = 0.

i need to know how to prove for the second part.

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# Homework Help: Functions and quadratic equations

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