Question

If a and b are zeroes of polynomial x2+7x+12 then find the value of a+b+2ab

Answer 1

Answer:

Step-by-step explanation:

x^2+7x+12

x^2+3x+4x+12

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

x=-4,-3

let a = -4

    and b= -3

a+b+2ab=-4-3 +(2*[-4]*[-3]

             =-7+24

∴a+b+2ab=17[ans.]