Answer
Let the polynomial with four terms = x y + 9 y + 8 x + 72
Factor of polynomial x y + 9 y + 8 x + 72 by grouping
= (x+9)(y+8)
Work Step by Step
Let the polynomial with four terms = x y + 9 y + 8 x + 72
First identify the terms which you have to group, here we make groups of xy, 8x, 9y, 72
Then make groups and find the factors
xy + 9y + 8x + 72
= x(y+8)+9(y+8)
= (x+9)(y+8)
Factor of polynomial xy + 9y + 8x + 72 = (x+9)(y+8)