Question

16. Simplify: (2x + 3y)2 + (3x – 2y)2?
17. How much is x3 - 3x2 - 4 less than 5x2 – 3x3 + 5?​

Answer 1

Step-by-step explanation:

16) (2x + 3y)2 + (3x - 2y)2

2(2x) + 2(3y) + 2(3x) - 2(2y)

4x + 6y + 6x - 4y

10x - 2y

You can reduce it further by dividing everything by 2.

5x - y

17) write the question properly..

Answer 2

Answer:

16. 10x+2y

Step-by-step explanation:

16.

=(2x+3y)2+(3x-2y)2

=4x+6y+6x-4y

=10x+2y