Question

If a < 0, c > 0 and b = 0 for the quadratic equation ax2 – bx – c = 0, then the equation has

Answer 1

Answer:

x= +- √(-c/a)

Step-by-step explanation:

This is the solution

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Answer 2

Answer:

Since, a,b,c>0 and ax

2 +bx+c=0 then,

⇒ x= 2a−b± 2ab −4ac

​ Case1: When b 2−4ac>0

⇒ x= 2a−b − 2ab −4ac

​and 2a−b + 2ab 2−4ac​

both roots are negatie.

Case when−4ac=0

⇒ x= 2a−b

​

i.e., both roots are equal and negative.

have negative real part.

∴ From above discission both roots have negative real parts.

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