Which are prime & non-prime
6x2 - 5x^2 + 2x - 14
12^4 - 18x^2 - 8x^2 - 12
6x^3 - 9x^2 - 10x + 15
12x^2 - 3x + 4x + 7

10% of 1,900,000. show me how you got the answer

Evaluate the expression for the given value of the variable. | ? 4 b ? 8 | + ? ? ? 1 ? b 2 ? ? + 2 b 3 -4b-8+-1-b2+2b3 ; b = ? 2 b=-2

5. which description does not guarantee that a quadrilateral is a squar ajo is a parallelogram with perpendicular diagonals 0% has all sides congruent and all angles congruent o has all right angles and has all sides congruent 10% is both a rectangle and a rhombus 30%