Explanation:
f(x) = 2x^2 - 7x + 3
f(0) = 2(0)^2 - 7(0) + 3
= 0 + 0 + 3
= 3
f(-2) = 2(-2)^2 - 7(-2) + 3
= 8 + 14 + 3
= 25
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