Question

if alfa and beta are zeros of the polynomial x^2+7x+12,then find the value of alfa +beta +2alfa beta​

Answer 1

you answer is 17

.....

Answer 2

Answer:

17

Step-by-step explanation:

x^2+7x+12=0

x^2+3x+4x+12=0

x(x+3)+4(x+3)=0

(x+4)(x+3)=0

The zeroes alpha and beta are -3 and -4 respectively

According to the question-

Alpha+beta+2alphabeta

=-3-4+24

=17