Paper 2 · Number, percentages, interest
Given that p = 3w² - xy, find the value of p when w=-2, x=6 and y=-3.
A-6
B6
C30
D48
Explanation: p=3(-2)²-(6)(-3)=12+18=30.
Derived from ZIMSEC Mathematics Paper 2, November 1999, Q1
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