Mathematics for IGCSE & O level - Equations (Section 1 - No. 47) | ExamPlay

Mathematics for IGCSE & O level - Equations (Section 1 - No. 47)

When completing the square, what needs to be added to x² + bx to complete the square?

(b/2)²

b²

b/2

b² / 4

설명

The number to add is (b/2)².

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