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Can someone please help and explain its due in a littleee

Can someone please help and explain its due in a littleee-example-1
User Woolstar
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1 Answer

23 votes
23 votes


f(x) = {x}^(2) - 3x + 2

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put x = (-1)


f( - 1) = {( - 1)}^(2) - 3 * ( - 1) + 2 \\ \\ 1 + 3 + 2 \\ \\ 6.

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put x = (z)


f(z) = {z}^(2) - 3 * z + 2 \\ \\ {z}^(2) - 3z + 2 \\ \\ {z}^(2) - 2z - z + 2 \\ \\ z(z - 2) - 1(z - 2) \\ \\ (z - 1)( z -2 ) \\ \\ (z - 1) = 0 \: \: , \: \: (z - 2) = 0\\ \\ z = 1 \:, \: 2

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put x = (x+1)


f(x + 1) = {x}^(2) - 3x + 2 \\ \\ {(x + 1)}^(2) - 3 (x + 1) + 2 \\ \\ {x}^(2) + 1 + 2x - 3x - 3 + 2 \\ \\ {x}^(2) - x \\ \\ x(x - 1) \\ \\ x(x - 1) = 0 \\ \\ x - 1 = (0)/(x) \\ \\ x - 1 = 0 \\ \\ x = 1.

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put x = (√2 + 1 )


f( √(2) + 1) = {x}^(2) - 3x + 2 \\ \\ {( √(2) + 1) }^(2) - 3( √(2) + 1) + 2 \\ \\ 2 + 1 + 2√(2) - 3 √(2) - 3 + 2 \\ \\ 3 - 1 √(2) - 1 \\ \\ 2 - √(2) \\ \\ 2 - 1.4 (optional \: \: \: steps)\\ \\ 0.6 \: \:

User Shahab Qureshi
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