JSCE Mathematics 2023 Objective — Question 20

Question 20 of 80 from the Junior Secondary Certificate Examination (JSCE) Mathematics 2023 Objective paper, with the correct answer and a full explanation.

If x = -2, y = -4 and z = 0, what is the value of 2x − (2xz − ...)?

A. 12Correct
B. -12
C. -20
D. 20

Explanation

The rest of the expression is cut off in the scan; with 2xz − y² this gives −4 − (0 − 16) = 12.

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