Question

If alpha and beta are the zeroes of the quadratic polynomial ax2+bx+c then alpha + beta =
a. -b/a
b. c/a
c. d/a
d. -d/a

Answer 1

QUESTION:

If alpha and beta are the zeroes of the quadratic polynomial ax2+bx+c then alpha + beta =

a. -b/a

b. c/a

c. d/a

d. -d/a

ANSWER:

Polynominal =

$a {x}^{2} + bx + c$

we have to find

$\alpha + \beta$

we know that;

$sum \: of \: zeroes = \frac{ - coefficient \: of \: x}{coefficient \: of \: {x}^{2} } = \frac{ - b}{a}$

here zeroes are alpha and beta;

using the formula;

$\alpha + \beta = \frac{ - b}{a}$

FINAL ANSWER :

your answer is option A