Answer:
by using the identity a square - b square = (a+b)*(a-b)
a = x+y
b=4-x
= (x+y + 4-x)(x+y - 4-x)
y+4 * x+y -4+x
y+4*2x+y-4
2xy+y square -4y + yx + 4x + 4y - 16 +4x
3xy +y square + 8x -16
Step-by-step explanation:
Answer:
x² - 4x - 9 = 29
x² - 4x - 9 - 29 = 0
x² - 4x - 38 = 0
Using the quadratic formula

Where
a = 1 , b = -4 c = - 38
So we have

Hope this helps you
So you could do 300+200+400
Then you would add your other number like this 200+300+1 and then your goingbto get your sum
Just redraw it at a 180 degrees , it doesn’t say whether it goes clockwise or counterclockwise so I can’t give the exact answer