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Last updated at Dec. 26, 2018 by Teachoo
Transcript
Example 8 Factorise ๐^4 โ 256 ๐^4 โ 256 = (๐^2 )^2 โ ใ(16)ใ^2 Using ๐^2 โ ๐^2 = (a + b) (a โ b) Here ๐=๐^2 and b = 16 = (๐^2+16) (๐^2โ16) = (๐^2+16) (๐^2 โ 4^2 ) Using ๐^2 โ ๐^2 = (a + b) (a โ b) Here ๐=๐ and b = 4 = (๐^2+16) (๐+4) (๐ โ 4) = (๐ โ ๐) (๐+๐) (๐^๐+๐๐)
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