1. Factorise the following using proper identities :
i) 25x²y² - 20xy²z + 4y²z²
Answers
Answered by
7
Answer:
25x2y2 - 20xy2z + 4y2z2
= (5xy)2 - 2൵ × 2yz + (2yz)2
= (5xy + 2yz)2
= y2 (5x + 2z)2
Answered by
5
Answer:
(5xy-2yz)
25x²y²-20xy ²z+ 4y ² z²
Hear,a²=(5 xy)² ,b²= (2yz) ²
=(5xy-2yz)²
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