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1029 b

1029 b. f (x) = x 2 – 2x. 1029 b. f( x ) = x 2 – 2 x f( a + h ) = ( a + h ) 2 -2( a + h ) f( a+h ) = (a 2 +2ah+h 2 ) – 2a – 2h f ( a+h ) = a 2 + 2ah + h 2 – 2a – 2h. 1029 b. f( a+h ) = a 2 + 2ah + h 2 – 2a – 2h f(a) = a 2 – 2a

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1029 b

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  1. 1029 b f(x) = x2 – 2x

  2. 1029 b f(x) = x2 – 2x f(a+ h) = (a +h)2 -2(a+h) f(a+h) = (a2+2ah+h2) – 2a – 2h f(a+h) = a2 + 2ah + h2 – 2a – 2h

  3. 1029 b f(a+h) = a2 + 2ah + h2 – 2a – 2h f(a) = a2 – 2a f(a+h)–f(a) = a2+2ah+h2-2a-2h-(a2-2a) = h2+2ah-2h

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