Question

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plss answer the underlined questions with steps ​

Answer 1

Answer:

1a=8mn+2    1b=2b+9            2a=-7x+11y          2c=6a^3b       3a=12a+4b

Step-by-step explanation:

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Answer 2

Answer:

1.a).-4mn+4+12mn-2

=-4mn+12mn+4-2

=+8mn+2

b).a+b+4+b-a-5

=a-a+b+b+4-5

=2b-1

c).4x²y-3xy²-5xy²+5x²y

=4x²y+5x²y-3xy²-5xy²

=9x²y-8xy²

d).4m-6n+2n-7m+12+4

=-3m-4n+16

2).

a).-2x+8y-(6x-3y)

=-3x+8y-6x+3y

=-3x+11y

b).5a-2b+4-(a-b)

=5a-2b+4-a+b

=4a-b+4

c).20a³b+11b²+15b-(14a³b-10b²-28a)

=20a³b+11b²+15b-14a³b+10b²+28a

=6a³b+22b²+15b+28a

d).3p²+3q²-pq-(4pq-3q²-4p²)

=3p²+3q²-pq-4pq+3q²+4p²

=7p²+6q²-5pq

3).

a).6a-b+7a+5b

=13a+4b

b).2ab+3bc-ab-5bc

=2ab-ab+3bc-5bc

=ab-2bc

c).9a²-3b³-4a²+7b³

=9a²-4a²+7b³-3b³

=5a²+4b³