SOLUTION: please help...Using factoring to solve this quadratic equation: 4x^2-17x-15=0

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Question 58692: please help...Using factoring to solve this quadratic equation:
4x^2-17x-15=0
Answer by venugopalramana(3286) About Me  (Show Source):
You can put this solution on YOUR website!
please help...Using factoring to solve this quadratic equation:
4x^2-17x-15=0
=4x^2-20x+3x-15=0
=4x(x-5)+3(x-5)=0
=(x-5)(4x+3)=0
hence
x-5=0...that is x=5...or
4x+3=0...that is 4x=-3...x = -3/4