SOLUTION: factor polynomial if possible if it cannot be factored write prime 20q to the second power minus 5r to the second power and -49r to te second power + 4t to the second power

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Question 302451: factor polynomial if possible if it cannot be factored write prime
20q to the second power minus 5r to the second power
and -49r to te second power + 4t to the second power
could you show me how to do and answer these problems

Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!

20q to the second power minus 5r to the second power
20q^2-5r^2
factor out 5
5*(4q^2-r^2)
difference of squares
5*(2q-r)*(2q+r)