Question 749833
(5m + 5n)(6m - 7n)


5m * 6m = 30m^2

5m * -7n = -35mn

5n * 6m = 30mn

5n * -7n = -35n^2


30m^2 - 35mn + 30mn - 35n^2

Combine like terms:

-35mn + 30mn = -5mn


30m^2 - 5mn - 35n^2


Answer:

30m^2 - 5mn - 35n^2












Lennox Obuong
Algebra Tutor
Nairobi, Kenya
Email: obuong3@aol.com