Answer:
17.) [tex]18^{4}[/tex] + [tex]2x^{3}[/tex] - [tex]14x^{2}[/tex]
18.) [tex]9x^{5} + 27x^{4}[/tex]
19.) [tex]-12y^{3} - 12y^{2} - 12y - 12[/tex]
20.) [tex]x^{2} + 9x + 20[/tex]
21.) [tex]4x^{2} - 5x - 6[/tex]
22.) m^{6} +2m^{5} + m^{4}
23.) 2
m
^{7}+
3
m
^{6}
+
2
m
^{4}
+
10
m
^{3}
+
15
m^{
2}
+
10
Step-by-step explanation:
17.) Distribute [tex]2x^{2}[/tex] to all of the terms in the parenthesis.
18.) Combine Like Terms (x and [tex]9x^{4}\\[/tex]) Multiply all other terms by [tex]9x^{4}[/tex]
19.) Multiply terms within the separate parenthesis together
20.) Use FOIL and expand the polynomial
21.) Use FOIL and expand the polynomial
22.) Combine like terms and multiply the contents of the parenthesis by the exponent
23.) Expand (
m^{
4}
+
5
)
(
2
m^{
3}
+
3
m
^{2}
+
2
) by multiplying each term in the first expression by each term in the second expression.
