multiply (-10x -9)^2 -100x -81
H hopen2impov Junior Member Joined Aug 4, 2010 Messages 66 Aug 29, 2010 #1 multiply (-10x -9)^2 -100x -81
W wjm11 Senior Member Joined Nov 13, 2004 Messages 1,417 Aug 29, 2010 #2 (-10x -9)^2 -100x -81 Click to expand... No. (-10x -9)^2 = (-10x - 9)(-10x - 9) Now, FOIL it.
H hopen2impov Junior Member Joined Aug 4, 2010 Messages 66 Aug 29, 2010 #3 oh, ok! here goes (-10x -9)^2 (-10x -9) (-10x -9) 100x^2 +90x +90x +81 100x^2 +180 +81
W wjm11 Senior Member Joined Nov 13, 2004 Messages 1,417 Aug 29, 2010 #4 (-10x -9)^2 (-10x -9) (-10x -9) 100x^2 +90x +90x +81 100x^2 +180 +81 Click to expand... Actually, that should be "180x", not just "180" ( as mmm4444bot kindly brought to my attention).
(-10x -9)^2 (-10x -9) (-10x -9) 100x^2 +90x +90x +81 100x^2 +180 +81 Click to expand... Actually, that should be "180x", not just "180" ( as mmm4444bot kindly brought to my attention).