Question

Find the area of square whose side is (x −2) m.
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Answer 1

Answer:

a2+b2-2ab

Step-by-step explanation:

side of a square = (x-2) m

Area of square=(side) 2

=(x-2) 2m2

=(x2-4x+4) m2

=(a-b)2 = a2+b2 -2ab

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Answer 2

Answer:

Answer-

( identity : (a-b)² = a²-2ab +b²)

= {(2x - 5y)}^{2}=(2x−5y)

2

= {(2x)}^{2} - 2(2x)(5y) + {(5y)}^{2}=(2x)

2

−2(2x)(5y)+(5y)

2

= 4 {x}^{2} - 20xy + 25 {y}^{2}=4x

2

−20xy+25y

2