Answer:
All you have to do is combine the like terms. Once you do that you get: -4x+3y=-11
We have the following:

solving for x

The solution of x is equal to 28, therefore 12 is not a solution of the equation
The answer is -8 because -2 * 4
Answer:
2x^2 - 9x - 5
Step-by-step explanation:
(2x+1)(x-5)
Using FOIL
= 2x^2 - 10x + x - 5
= 2x^2 - 9x - 5
Answer:
. It’s because a prime factor of all even numbers is 2. Therefore the prime factors of all even squares includes two, therefore, the square must be even.