M MARIE New member Joined Dec 19, 2006 Messages 8 Jan 5, 2007 #1 I am really struggling with inequalities. Am I doing these correctly? -2x(x+6) > x+4 -2x-12+12 > x+4+12 -2x > x+16 -2x-x > 16 -3x >16 -3/3x > -16/3 (x, -16/3) 2(4-3/5q) < 5 8 - 30q < 5 -30q < 5 - 8 -30q < -3 -30q/-30 < -3/-30 q < 1/10 (q, 1/10)
I am really struggling with inequalities. Am I doing these correctly? -2x(x+6) > x+4 -2x-12+12 > x+4+12 -2x > x+16 -2x-x > 16 -3x >16 -3/3x > -16/3 (x, -16/3) 2(4-3/5q) < 5 8 - 30q < 5 -30q < 5 - 8 -30q < -3 -30q/-30 < -3/-30 q < 1/10 (q, 1/10)
D Denis Senior Member Joined Feb 17, 2004 Messages 1,706 Jan 5, 2007 #2 MARIE said: -2x(x+6) > x+4 -2x-12+12 > x+4+12 Click to expand... No; -2x(x + 6) = -2x^2 - 12x Your problem is not inequalities, but the basics; see your teacher.
MARIE said: -2x(x+6) > x+4 -2x-12+12 > x+4+12 Click to expand... No; -2x(x + 6) = -2x^2 - 12x Your problem is not inequalities, but the basics; see your teacher.
