Why is the product of two rational numbers always rational? select from the bold words to correctly complete the proof. let ab and cd represent two rational numbers. this means a, b, c, and d are (integers or irrational numbers), and (b is not 0, d is not 0 or b and d are 0). the product of the numbers is acbd, where bd is not 0. because integers are closed under (addition or multiplication), acbd is the ratio of two integers, making it a rational number.

Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions: y < 4x − 8 y is greater than or equal to negative 5 over 2 times x plus 5 part a: describe the graph of the system, including shading and the types of lines graphed. provide a description of the solution area. (6 points) part b: is the point (5, −8) included in the solution area for the system? justify your answer mathematically. (4 points)

Me! i will mark brainliest! i don't get polynomials and all that other stuff. so this question is really hard. multiply and simplify.(x - 4) (x^2 – 5x – 6)show your

Write the equation in general quadratic form: plz !