Paper 2 · Algebra, factorising, equations
Solve the equation y²-6y+8=0.
Model answer
y=2 or y=4
Also accepted: 2, 4, 2 and 4
Explanation: (y-2)(y-4)=0 → y=2 or y=4.
Derived from ZIMSEC Mathematics Paper 2, November 1999, Q2
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