Mathematics for IGCSE & O level - Functions (Section 1 - No. 20) | ExamPlay

Mathematics for IGCSE & O level - Functions (Section 1 - No. 20)

Given the function f(x) = 2x + 4, find the value of x when f(x) = 0.

-2

2

4

-4

解释

2x + 4 = 0 => x = -2

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