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Alina [70]
4 years ago
6

Help me please I am lost

Mathematics
1 answer:
goblinko [34]4 years ago
7 0

Answer:

The answer to your question is:

a)   f(a) -2 = a² - 3

b)    f(a - 2) = a² - 4a + 3

c)     f(b + d) = b² + 2bd + d² - 1

Step-by-step explanation:

a. f(a) - 2 = (a)² - 1 - 2

  f(a) -2 = a² - 3

b. f(a - 2) = (a - 2)² - 1

    f(a - 2) = a² - 4a + 4 - 1

    f(a - 2) = a² - 4a + 3

c. f(b + d) = (b + d)² - 1

   f(b + d) = b² + 2bd + d² - 1

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Hey there! :D

Since 50% is half of 100%, it would also be half of 42. 

42/2 <== that can be used to determine 50%

42/2= 21

50% of 42 is 21. 

You could also use this:

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I hope this helps!
~kaikers 
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