Step-by-step explanation:
I'll do 2.
Alright,Alex let say we have factored a quadratic into two binomial, for example

If we set both of those equal to zero

We can used the zero product property in this case to find the roots of the quadratic equation.
This means that

This means we set each binomal equal to zero to find it root.






So our roots are negative 3/5 and negative 2/3 using zero product property
Answer:
All real numbers
Step-by-step explanation:
Solve a system of equations by elimination
With the equation given, you can solve for y to get: y =
x - 
Then, substitute this value in on the equation.
x - 5(
x -
) = 6
x - x + 6 = 6
6 = 6
The solution is all real numbers
Answer:
the third one
Step-by-step explanation: