JAMB - Mathematics (1997 - No. 1)

Evaluate 64.764\(^2\) - 35.236\(^2\) correct to 3 significant figures

2960

2950

2860

2850

解释

(64.764 - 35.236)(64.764 + 35.236)

= 29.528 x 100

= 2950 to 3 sig. fig.

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