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Math / Algebra / Grade 9 / ml9ci

Evaluate a Quadratic Carefully - Practice 1

Square the input before multiplying by a coefficient.

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Square the input before multiplying by a coefficient. Use parentheses when substituting a negative input; its square is positive.

Worked example

For f(x) = x^2 - 3x + 2, f(-2) = 4 + 6 + 2 = 12.

For f(x) = x^2 - 3x + 2, f(-2) = 4 + 6 + 2 = 12.
Worked model: For f(x) = x^2 - 3x + 2, f(-2) = 4 + 6 + 2 = 12.
Question 1 For f(x) = x^2 - 3x + 2, find f(-5).
Question 2 For f(x) = x^2 - 3x + 2, find f(-4).
Question 3 For f(x) = x^2 - 3x + 2, find f(-3).
Question 4 For f(x) = x^2 - 3x + 2, find f(-2).
Question 5 For f(x) = x^2 - 3x + 2, find f(-1).