Mathematics
Junior High
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\12,2
(2) (2√2+1)(2√2-3)-2√2 (√√2+2)
(4x2-672√2-3)-(47462)
(2) (2√2+1)(2√2-3)-2√2 (√√2+2)
={(2√2)²+(1-3)×2√2+1x(-3)}) (S
-(4+4√2).**5
=(8-4√√2-3)-4-4√2
=1-8√2
1-8√2
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