(2k + 4)(2k2 – 5k – 4) simplify in vertical method

In the figure shown below, m < 40 and ab =8. which equation could be used to find x?

For each polynomial, determine the degree and write the polynomial in descending order. a. –4x^2 – 12 + 11x^4 b. 2x^5 + 14 – 3x^4 + 7x + 3x^3

Answer! if you don’t mind, can you explain