Answer: Number one would be 3x+2y+-14 and x+y=-4, second one is x=-3, y=7
Step-by-step explanation:
The first one is solved by inputting the x and y in each one and finding which one comes out true, the second on is solved by substitution. to find x you would subtract x in the first equation and make it y=4-x then input that equation in the y in the second equation.
Answer:
6
Step-by-step explanation:
y = x² - 6x + 11
Complete the square.
y = x² - 6x + 9 + 2
y = (x - 3)² + 2
a = 1, h = 3, k = 2
a + h + k = 6
Answer:
The two roots of the quadratic equation are
Step-by-step explanation:
Original quadratic equation is 
Divide both sides by 9:
Add 
to both sides to get rid of the constant on the LHS
==> 
Add 
to both sides
This simplifies to
Noting that (a + b)² = a² + 2ab + b²
If we set a = x and b = 
we can see that
= 
So
Taking square roots on both sides
So the two roots or solutions of the equation are
and 
So the two roots are
and
