Which of the following are solutions to the equation (x-a)(x-b)=0?a) x= -a and a= -b b) x=a and x=b c) x=ab d) x= (-a)(-b) e) x= 2a=2b
(x-a) (x-b) =0
If either (x-a)=0 or (x-b)=0 then the entire expression is equal to 0.
Set the first factor equal to 0 and solve.
Set the next factor equal to 0 and solve.
The solution is all values that make (x-a)(x-b) =0 true.
x= a, b
which in your problem is choice b) x=a, x=b