• 2021 December(E23) Math Question 38

    Algebraic & Function Expressions

    - Solve Function Expressions

    Funny functions
    Choice H

    Given that

    f(x)=x2+7x−3  and  g(x)=x2−4x+5f(x)=x^2+7x-3 \; and \; g(x)=x^2-4x+5

    and

    h(x)=f(x)−g(x)h(x)=f(x)-g(x)

    So

    h(x)=x2+7x−3−(x2−4x+5)h(x)=x^2+7x-3-(x^2-4x+5)
    h(x)=11x−8h(x)=11x-8
    ∴h(2)=11(2)−8=14\therefore h(2)=11(2)-8=14

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