please give me answer of these three questions then I will make your answer as Brainlist Answer
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2
Answer:
Answer1) 2+7x-10x^2
Answer2) -5m^2+8m-3
Answer 3) 2b^2+5bc-2z^2+4c^2-(2b^2+2bc)
=3bc-2z^2+4c^2
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Answer:
No. 3
Just subtract 1-2x+3x² from 3+5x-7x & u will get 2+7x-10x²
No.4
Just add -4m²+5m-3 and m²-3m & u will get -3m²+2m-3
No.5
Just add 4b²+5bc,-2b²-2bc-2z² & 2bc+4c² & u will get 2b²+5bc-2z²+4c².
Then,
Add 5b²-c² & -3b²+2bc +c² & u will get 2b²+2bc
Then,
Subtract 2b²+2bc from 2b²+5bc-2z²+4c² & u will get 3bc-2z²+4c²
(Solved)
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