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lidiya [134]
2 years ago
7

3 times the sum of r and s squared minus 2 times the sum of r and d square

Mathematics
1 answer:
coldgirl [10]2 years ago
7 0

Answer:

r^2 + 6rs  - 4rd - 2d^2 + 3s^2

Step-by-step explanation:

3(r+s)^2 - 2(r+d)^2

PEMDAS

parenthesis, exponents, multiplication, division, addition, subtraction

in that order

3( r^2 + 2rs + s^2 ) - 2(r^2+ 2rd + d^2)

3r^2 + 6rs + 3s^2 - 2r^2 - 4rd - 2d^2

r^2 + 6rs  - 4rd - 2d^2 + 3s^2

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galben [10]

Answer:

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Step-by-step explanation:

Hey there!

So this question looks a lot more complicated than it really is.

Complementary angles are the same.

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If A and B are complementary and B equals 37 degrees, than A is also 37 degrees.

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Hoped this helped! :D

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