the answer is x(3+y)
x3+xy-x2y2=x(x2+y-xy2)
The only common factor to all terms is yz. → xy³z² + y²z + xyz = yz(xy²z + y + x)
2(xy+xz+yz)=100 xy+xz+yz=50 or x(y+z)+yz=50 x=2, y=4, z=7
Three: xy plane, xz plane, yz plane.
x
xy times yz divided by two is the area.2a*a/2 is the area 36a^2=36a=6xy is 12.CHECK:6*12=72half of 72 is 36. Yeah!
if you take a factor of (Y) you end up with Y(X+5Z-2).
There appear to be 10 terms in the determinant. A determinant can only have a perfect number of terms. So something has gone wrong with the question. 1: x2 plus 1 2: xy 3: xz 4: xy 5: y2 plus 1 6: yz 7: 1 plus x2 plus y2 plus z2 8: xz 9: yz 10: z2 plus 1
8.3
y(z+x) + 4(x+z)
If the lengths of the edges are x, y and z units, then the total surface area is 2*(xy + yz + zx).