Question

please tell me this question its urgent for me​

Answer 1

Answer:

a) 7x + 1y +2

b) 10x^3 + 3y^2 -1

Answer 2

Answer:

$(2x + 3y + 4) + (5x - 2y - 2) \\ = (2x + 5x) + (3y - 2y) + (4 - 2) \\ = 7x + y + 2 \\ b)(4 {x}^{3} - 5 {y}^{2} - 3) + (6 {x}^{3} - 2 {y}^{2} + 2) \\ = 10 {x}^{3} - 7 {y}^{2} - 1$