product of values

The product of the values of a for which  22a+3 - 65(2-1) = 57is

a. -3

b. 3

c. -9

d. 9

1Comment
Hradesh hradeshpatel 12 Sep 2016 10:09 pm

it jush check putting a value of a in the equation so that  it satisfied both 3,-3 so product is -9