Question

Add the following algebraic expressions.
A. 3x + 4y and 2x + 2y
B. 5x2 + 3x and 72x2 - 4x + 9
C. 12x2-3x + 4 and - 12x2 + 4x - 4
D. 9p2 -8p2q + 7pq2 and 14p29 - 12p2​

Answer 1

Step-by-step explanation:

A)

$3x + 4y + 2x + 2y \\ = 5x + 6y$

B)

$5 {x}^{2} + 3x + 72 {x}^{2} - 4x + 9 \\ = 77 {x}^{2} - x + 9$

C)

$12 {x - }^{2} - 3x + 4 - 12 {x}^{2} + 4x - 4 \\ = x$

D) is not clear