XY=10
Y=X+3
X(X+3)=10
X^2+3X=10
X^2+3X-10
(X-2)(X+5)
Rearranging the first equation gives:

Substituting this into the other equation gives:

If x=-1:

So
x=-1, y=-5
= 2ab + 4a + 6 - 6
= 2ab + 4a
you can factor this to 2a(b + 2)
102 ft = 12 cm1224 in = 12 cm1 in = 0.00980 cm