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Draw the line
The curve is already drawn — the classic exam move is adding one straight line to solve a different equation. Work out the line, drag it in, read off the roots.
① the line
② draw it
③ read the roots
y =
−
＋
x
+
−
＋
Check my line
Check roots
End of the set
lines worked out unaided
questions with every root read right first go
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This tool needs JavaScript — the graph, the draggable line, all of it.