3 years ago

What is the correct answer for both ?

Mathematics

2 answers:

lakkis [162]3 years ago

4 0

Answer:

19. Option A

20. Option B

Step-by-step explanation:

yulyashka [42]3 years ago

4 0

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

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What is the correct answer for both ? ​

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