Question

What is the SQUARE of ( x - 7 )

With SOLUTION please

Answer 1

Answer:

x²-14x+49

Step-by-step explanation:

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Answer 2

Method 1

By Multiplication

( x - 7 ) * ( x - 7 )

x ( x - 7 ) - 7 ( x - 7 )

x² - 7x -7x + 49

x² - 14x + 49

Method 2

By Indentity ( a - b )²

( x - 7 )²

( a - b )² = a² + 2 ab - b²

= x² + 2 ( x ) ( 7 ) - 7²

= x² + 2* 7x - 49

= x² + 14x + 49

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