Evaluate these
using identity(a+4) (a_4)
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a^2-4^2
a^2-16 is the answer
....:)
a^2-16 is the answer
....:)
Answered by
0
Answer:
a ⁴ −b ⁴ =(a ² ) ²−(b ² ) ²
=(a ²−b ² )(a ² +b ² )
=(a−b)(a+b)(a ²+b ²)
Hence factorised
Formula:
x ² −y ²=(x−y)(x+y)
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