Integers x, y and z are such that x = -2 and -6 <= z <= 4. Find the least possible value of yz^2.

Integers x, y and z are such that x <= 6, y >= -2 and -6 <= z <= 4. Find the least possible value of yz^2.

Model answer

-72

Also accepted: yz^2 = -72, -72

ZIMSEC Mathematics 4028/2, June 2010, Q1(b)(i), via the Topical Collection

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