Answer fast for 100 points!!!! $$
Simply it using the identities....
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Answered by
13
= 100.
Important Formulae :
1. a² – b² = (a – b)(a + b)
2.(a+b)² = a² + 2ab + b²
3.a² + b² = (a – b)² + 2ab
4.(a – b)² = a² – 2ab + b²
5.(a + b + c)² = a² + b² + c² + 2ab + 2ac + 2bc
6.(a – b – c)² = a² + b² + c² – 2ab – 2ac + 2bc
7.(a + b)³ = a³ + 3a²b + 3ab² + b³
8.(a + b)³ = a³ + b³ + 3ab(a + b)
9.(a – b)³ = a³ – 3a²b + 3ab² – b³
10.a³ – b³ = (a – b)(a² + ab + b²)
11.a³ + b³ = (a + b)(a² – ab + b²)
12.(a + b)³ = a³ + 3a²b + 3ab² + b³
Answered by
4
According To Identity.
Using This Identity
Numerator=58²-42²
Can Written as
Numerator=100×16
Fraction
CHECK
58²=3364
42²=1764
When Divided by 16
Hence It is Right
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