Math, asked by noleshchandrakpacviu, 1 year ago

If alpha and bita are the zeroes of the polynomial 2y^2+7y+5 write the value of alpha + bita + alpha × bita

Answers

Answered by ishwardsiidc
1
2y^2+7y+5=2y^2+2y+5y+5            {factorising}
                 =2y(y+1)+5(y+1)
                 =(2y+5)(y+1)
             
                  therefore y=-5/2 and -1

                  therefore alpha=-5/2 and bita =-1

now alpha+bita+alphabita=-5/2+1+-5/2x1
                                          =-5/2+1-5/2
                                          =2(-5/2)+1
                                          =-5+1
                                           =-4

THEREFORE ANSWER IS -4
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