It is: 30 remember the order of operations in arithmetic
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- 5 - x + 2 - x + 6 - x + 10 - x = -5 + 2 + 6 + 10 - x - x - x - x = 13 - 4x
-2 and -6
If: x+2 = y+6 Then: y = x-4
x^2 +7x+6 = (x+1)(x+6) when factored
x3 + 2x2 + 3x + 6 = x2(x + 2) + 3(x + 2) = (x + 2)(x2 + 3)