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X2 a 1 a x 1
X2 a 1 a x 1 pictures 5
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X2 a 1
X2 a 1 a x 1
factorise x2 a 1 a x 1
x2 a 1 a x 1 solve
x2 a 1 a x 1 0
x2 a 1 a x 1
