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victus00 [196]
3 years ago
6

Find the product of (3x + 7y)(3x − 7y)

Mathematics
2 answers:
snow_lady [41]3 years ago
8 0

Answer: 9x^2 - 49y^2

Step-by-step explanation:

(3x + 7y)(3x − 7y)

9x^2 -21xy + 21xy - 49y^2

9x^2 - 49y^2

nalin [4]3 years ago
7 0

Answer:

9x^2 - 49y^2

Step-by-step explanation:

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Solve for m 1/C+1/m=1/z
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Answer:  " m = zC / (C − z) " .
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Explanation:
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Given:  1/C + 1/m = 1/z ;  Solve for "m".

Subtract  "1/C" from each side of the equation:
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1/C + 1/m − 1/C = 1/z − 1/C  ;

to get:  1/m = 1/z − 1/C ;
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Now, multiply the ENTIRE EQUATION (both sides); by "(mzC"); to get ride of the fractions:
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mzC {1/m = 1/z − 1/C} ;

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