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Alenkasestr [34]
3 years ago
14

Write a related subtraction fact for 9 + 3 = 12. Explain how the two facts are related.

Mathematics
2 answers:
yuradex [85]3 years ago
7 0
So we know 3 x 3 = 9 right? Than 12 - 3 = 9 or 12 - 9 = 3!!! They both use the same numbers. Subtraction is the opposite of addition and allows us to check our answers.

Hope I Answered Your Question!!!
Westkost [7]3 years ago
3 0

12-9=3
12-3=9

You then can add any of the numbers to get 12, which is how they are  related

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(2a+b)^2 how do you do this
gulaghasi [49]

•  Expand (2a + b)²:

(2a + b)²

= (2a + b) · (2a + b)


Multiply out the brackets by applying the distributive property of multiplication:

= (2a + b) · 2a + (2a + b) · b

= 2a · 2a + b · 2a + 2a · b + b · b

= 2²a² + 2ab + 2ab + b²


Now, group like terms together, and you get

= 2²a² + 4ab + b²

= 4a² + 4ab + b²    <———    expanded form  (this is the answer).


I hope this helps. =)


Tags:  <em>special product square of a sum algebra</em>

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lidiya [134]

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Sav [38]

Answer:

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Step-by-step explanation:

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2 years ago
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3 0
3 years ago
Read 2 more answers
If anyone could please help me with this question???I know that you can get three triangles out of the shape.
dem82 [27]

Answer:

See below.

Step-by-step explanation:

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8 0
3 years ago
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