5m Zen
X 2 y 4 z whole square
X 2 y 4 z whole square pictures 5
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X 2 y 4
X 2 y 4 z whole square
2 x minus 3 y 4 z whole square
2 x 3 y 4 z whole square
factorise x + 2y + 4z whole square
evaluate x 2 y 4 z whole square
x 2 y 4 z whole square
