Answer the following.
1.What is the sum of
(-4m3 –15m2+ 4m -6)and
(23m3 –8m2–8m –9)?

2.What is the result if
(23x4+ 23x3+ x2+ x + 33)
is subtracted from
(12x4–11x3–x2–x + 7)?

3.Subtract
9x3+ 4x + 7x2
from the sum of
3x2–7x–x3and -8x2–7x+ 8x3.

4.Subtract the sum of
2x4–3x3–4x2+ 2x –3
and
4x4–2x3+ x5–11 from 2x4–7x5–2x3+ 8x2–6x+ 19.

5.Find the difference
when
9x3–3x2–x + 5
is subtracted from
8x3–7x2–9x–23.​​