Question

Simplify
(3x+5y−3)²+(3x−5y+3)²

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Answer 1

Answer:18x² + 50y² − 60y + 18

Step-by-step explanation:

To simplify: (3x+5y−3)²

3x+5y−3   ×   3x+5y−3 =      9x² + 25y² - 9

9x² + 25y² - 9       +      9x² + 25y² - 9  =     18x² + 50y² + 18

To simplify: (3x−5y+3)²

3x+5y−3       =       3x + -3 = 6x  

                    =       6x   ×  5y  = 30  ×  2 = -60y  

( 6 is a large number, 5 is the small number. the value of small number is y so -60 must be -60y )

18x² + 50y² -60y + 18

Answer is : 18x² + 50y² -60y + 18