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Q4 of 157 Page 30

Factorize :

25x2 – 20xy + 4y2

Given 25x2 – 20xy + 4y2 = (5x)2 – 2× 5x ×2y x + (2y)2


Comparing with (a– b)2 = a2 + b2 – 2a×b


a = 5x and b = 2y


So, 25x2 – 20xy + 4y2 = (5x – 2y)(5x – 2y)


More from this chapter

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4

Factorize :

x2 – 12x + 36

4

Factorize :

4p2 – 25q2

4

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169m2 – 625n2

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Questions · 157
1. Algebra
1 1 1 1 1 1 1 2 3 4 5 6 1 2 3 4 5 5 5 5 5 6 6 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 5 5 5 5 5 6 6 7 8 9 10 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 5 5 5 1 1 1 1 1 1 2 2 2 2 2 3 3 3 3 3 3 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2
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