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y = 12x + 5x - 7 Since '12x' and '5x' both have the same variable, you are able to combine them. To do this you just need to add 12 + 5 to get 17. After doing this you can rewrite the equation as y = 17x - 7. You can then solve this equation for different values by plugging in a number for 'x' or 'y' or graphing the equation.
assuming you meant 5x2+12x+4 (5x+2)(x+2)
Just the one because if: 12x+6 = 5x then x = -6/7
a= 10, b= -7, c=-12 ac=10 x -12 ac=-120 120={1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60,120} 8 x - 15 10x + 8x- 15x -12x (10x + 8x) - (15x - 12x) 2(5x + 4x) - 3(5x + 4x) (2 - 3) ( 5x + 4x)
12x and then the squared. (the little two)