a^2-b^2=(a-b)(а+b)
(a+b)^2=a^2+2ab+b^2
(a-b)^2=a^2-2ab+b^2
Доведення:
(16а^2+1)^2-64a^2=(16а^2+1-8a)
(16a^2+1+8a)=(4a-1)^2(4a+1)^2
Доведено
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Answers & Comments
a^2-b^2=(a-b)(а+b)
(a+b)^2=a^2+2ab+b^2
(a-b)^2=a^2-2ab+b^2
Доведення:
(16а^2+1)^2-64a^2=(16а^2+1-8a)
(16a^2+1+8a)=(4a-1)^2(4a+1)^2
Доведено