Add:2p4 – 3p3 + p2 – 5p + 7, -3p4-7p3-3p2-p-12

The addition is as follows:The result is as follows -p4-4p3-2p2-6p-5

Q81 of 128 Page 224

Add:
2p⁴ – 3p³ + p² – 5p + 7, -3p⁴-7p³-3p²-p-12

The addition is as follows:

The result is as follows -p⁴-4p³-2p²-6p-5

Add:

xy²z² + 3x²y²z–4x²yz²,-9x²y²z + 3xy²z² + x²yz²

Add:

5x² – 3xy + 4y² – 9, 7y² + 5xy – 2x² + 13

Add:

3a(a-b-c), 2b (a-b + c)

Add:

3a (2b + 5c), 3c (2a + 2b)