Question

If alpha and beta are the zeroes of the polynomial 9y2 + 12y + 4, find the value of alpha + beta - alpha.Beta

Answer 1

Answer:

p(x)= 9y2 +12y +4

$\alpha + \beta = - b \div a$

a + b = -12÷9

a + b = -4÷3

alpha × beta = c÷a

a × b = 4÷9

substitute a+b and a×b

=a+b - a×b

= -4÷3-4÷9

=-24÷27