Example 5 - Simplify the expressions and evaluate them as directed

 

 

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Example 5 Simplify the expressions and evaluate them as directed: (i) 𝑥 (𝑥−3)+2 for 𝑥=1 𝑥 (𝑥−3)+2=𝑥×𝑥−𝑥×3+2 =𝑥^2−3𝑥+2 For x = 1 Putting x = 1 in expression 𝑥^2−3𝑥+2 = 1^2−3×1+2 = 1−3+2 = (1+2)−3 = 3−3 = 𝟎

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