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What is the correct answer for both ? ​

What is the correct answer for both ? ​
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4 votes
What is the correct answer for both ? ​

What is the correct answer for both ? ​-example-1
User Niels Henkens
by
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2 Answers

6 votes
Answer of 19 is A by using the a^2 - b^2 = ( a - b) ( a + b) so this will be (r-1 )( r+1) because we have r^2 so we have to factorize it


Answer of 20 is B by following the same steps
User Houcem Berrayana
by
8.4k points
5 votes

Answer:

19. Option A

20. Option B

Explanation:

User Adolfojp
by
8.6k points
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