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Find the value of the polynomial 5x-4x^(...

Find the value of the polynomial `5x-4x^(2)+3` at (a) x=0 (b) x=1

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To find the value of the polynomial \( P(x) = 5x - 4x^2 + 3 \) at the given values of \( x \), we will evaluate the polynomial for both parts of the question. ### Part (a): Find \( P(0) \) 1. **Substitute \( x = 0 \) into the polynomial:** \[ P(0) = 5(0) - 4(0)^2 + 3 \] 2. **Calculate each term:** - The first term: \( 5(0) = 0 \) - The second term: \( -4(0)^2 = 0 \) - The third term: \( +3 = 3 \) 3. **Combine the results:** \[ P(0) = 0 - 0 + 3 = 3 \] Thus, the value of the polynomial at \( x = 0 \) is **3**. ### Part (b): Find \( P(1) \) 1. **Substitute \( x = 1 \) into the polynomial:** \[ P(1) = 5(1) - 4(1)^2 + 3 \] 2. **Calculate each term:** - The first term: \( 5(1) = 5 \) - The second term: \( -4(1)^2 = -4 \) - The third term: \( +3 = 3 \) 3. **Combine the results:** \[ P(1) = 5 - 4 + 3 = 1 + 3 = 4 \] Thus, the value of the polynomial at \( x = 1 \) is **4**. ### Summary of Results: - \( P(0) = 3 \) - \( P(1) = 4 \)
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Find the value of the polynomial 5x-4x^(2)+3 at (i) x=0 (ii) x=-1 (iii) x=2

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Knowledge Check

  • The value of the polynomial 5x -4x^(2)+3, when x=-1 is

    A
    `-6`
    B
    6
    C
    2
    D
    `-2`
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