Exalute using identities :(x-5) (x+5) (x2 +2.5)
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Step-by-step explanation:
given (x-5)(x+5)(x^2+25)
using the identity (a+b)(a-b) = a^2 - b^2,
(x-5)(x+5) = x^2 - 5^2
= x^2 - 25
using the same identity ,
(x^2-25)(x^2+25)=(x^2)^2 - 25^2
= x^4 - 625
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