Exercise 1: Look at the non-examples in the table above and tell why these are not linear equations in one variable. Answer: 8x is not an equation. 12p2 + 1 = 0 is a second-degree equation. 4a + 5b = 18 is a linear equation but in two variables. x2 + 5x + 6 = 0 is also a second-degree equation. pleasss po pasagott​