a² + b²
a² - b²
a² + 2ab + b²
a² - 2ab + b²
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Answer : Option D
Explanation :
(x + 8)(x - 9)
(x - 8)(x + 9)
(x - ?72)²
(x - ?72)(x + ?72)
Answer : Option B
(5 - 4x)(4 - 5x)
(5 - 4x)(4 + 5x)
(5 + 4x)(4 - 5x)
(5 + 4x)(4 + 5x)
Answer : Option C
x³ - y³
x³ + y³
x³ + 3xy(x - y) + y³
x³ + 3xy(x + y) + y³
(x + 10) ⁄ (x - 9)
(x + 10) ⁄ (x + 9)
(x² + x - 90) ⁄ (x² - 81)
None of above
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