2x + y = 10
5x - y = 18
7x = 28
x = 4
2(4) + y = 10
8 + y = 10
y = 2
(4,2)
I think is
4 x + 2y
256x + 16y
Half the x-coefficient is -3, so the equation needs to be rearranged into a form that looks like
x² -6x +(-3)² + [something]
You can get there by adding and subtracting 9 from the original equation.
y = x² -6x +9 +7 -9 . . . . . 9 added and subtracted
y = (x² -6x +9) -2
The quantity in parentheses is a perfect square, so we can write the equation in the desired form as ...
y = (x -3)² -2
Answer:
pours 3 gallons of paint equally into 5 cans. How many gallons of paint will there be in each can? ... Did you divide to get the answer? ... If two gallons of paint is needed to paint a 40 sq meter wall, how many gallons of paint ... Hamza bought 8 gallons of brown paint to paint his kitchen and dining room
