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dit= xkuadrat + ykuadrat=?
xkuadrat + ykuadrat = (x+y)kaudrat - 2xy
= 6kuadrat - 2 dikali 4
= 36 - 8
= 28
dit= a² + b²
jwb=a² + b² = (a+b)² - 2ab
= 6² -2( 2 × 4)
= 36 -( 4+8)
= 24
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