Question

if a and b are the zeroes of x2 +7x + 12,then find the value of 1/a + 1/b + 2ab​

Answer 1

x^2 +7x +12

x^2 +4x+3x +12

x(x+4) +3(x+4)

(x +3) (x+4)

x = -3 & x= -4

let a= -3 & b = -4

ATQ

1/a+1/b+2ab

(1/-3) +(1/-4) +2(-3) (-4)

-1/3-1/4+24

-4-3+288/12

281/12 Ans

Answer 2

hope this answer is helpful friend have a nice day