Mathematics
Junior High
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(1)=√5-3のとき,+6x2の値を求めなさい。
(2)x=4-2√2 のとき,x-8x+4の値を求めなさい。
(3) a+b=-2√2, ab= 4√2 ¿, a² + b²**ÒR¿\\.
[7] a² + b² = (a + b)² -
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