Oh, what a happy little question we have here. To find 6x plus 3, we simply multiply 6 by x and then add 3 to the result. It's like adding a touch of color to a beautiful painting - just follow the steps and you'll have your answer in no time.
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It's a binomial expression in 'x'.
If you want to know its numerical value, you have to know how much 'x' is.
Or at least you have to know how much the whole (6x+3) is.
x2 + 6x + 12 = 0 x2 + 6x + 9 = -3 (x + 3)2 = -3 x + 3 = ± √-3 x = -3 ± i√3
-6x+3 = -7-5x 7+3 = 6x-5x 10=x
6x + 3 = 2x + 5 4x = 2 x=1/2
9x+6 = 6x+15 9x-6x = 15-6 3x = 9 x = 3
7+10+(-6x)=17-6x