That depends on the numerical values of 'x' and 'y'. When either of them changes,
the value of (10x + 4y) changes.
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10x+4y+11xy
10x - 3y + 2x - 4y =(10x + 2x) + (-3y - 4y) =12x - 7y
If: 4y+10x = 16Then: 4y = -10x+16And: y = -2.5x+4
10x + 2y + 8z - 5x + 4z - 4y = 10x - 5x + 2y - 4y + 8z + 4z = (10 - 5)x + (2 - 4)y + (8 + 4)z = 5x - 2y + 12z
Complete the squares: x2 - 10x + 25 + y2 + 4y + 4 - 52 = 25 + 4 = 29 x2 - 10x + 25 + y2 + 4y + 4 = 52 + 29 = 81 So the radius is sqrt(81) = 9