Question

P2 + 4q2 -4pq2 - 16r2​

Answer 1

Answer:

Given :

p² - 4pq + 4q² - r²

= { p² - 2.p.2q + ( 2q )² } - r²

= ( p - 2q )² - r²

= ( p - 2q - r ) ( p - 2q + r )

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formula used : ↓

a)→ ( a - b )² = a² - 2ab + b²

b) → a² - b² = ( a + b ) ( a - b )

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thanks!