Question

Simplify ( 7 - y )^2.....

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Answer 1

Step-by-step explanation:

(

7

y

)

2

Apply the product rule to

7

y

.

7

2

y

2

Raise

7

to the power of

2

.

49

y

2

Answer 2

Step-by-step explanation:

(7-y) (7-y)

49-14y+y2

y2 -14y+49

y2-(7+7)y+49

y2-7y-7y+49

y(y-7)-7(y-7)

(y-7) (y-7)