SOLUTION: (a -9b)(2a + 7b) 2a2 - 11ab - 63b2 not sure if this has been solved correctly and if I missed a step

Algebra.Com
Question 45476: (a -9b)(2a + 7b)
2a2 - 11ab - 63b2
not sure if this has been solved correctly and if I missed a step

Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
Looks good.
Cheers,
Stan H.