Question

Ifa and B are the zeroes of the polynomial
2y2 + 7y +5, then find the value of a + B + aß.​

Answer 1

Answer:

2y² + 7y + 5 = 0

Here a = 2 , b = 7 , c = 5

α,β are 2 zeroes

So sum of the zeroes = α + β = - b/ca= -7/2

Product of zeroes = αβ =  c/a = 5/2

Now just put the values

α + β + αβ = ( α + β) + αβ

= -7/2 + 5/2

= -2/2 = -1

So required answer is -1

Hope This Helps You!

Answer 2

Step-by-step explanation:

2y² +7y+5

2y²+(2+5)y+5

2y²+2y+5y+5

2y(y+1) 5(y+1)

(y+1)(2y+5)

y=-1 or y=-5/2

two zeros and B are -1 and -5/2

sorry bro I don't understand what your question is may be you want value of a +b+ab it's this is zeroes of polynomial if yes then..

a + b + ab

= -1 +(-5/2) +(-1)(-5/2)

= -1-5/2+5/2

= -1

may be this you answer or if you only want zeroes of polynomial then you answer is above this..