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  • (x − h)² = k, whole answers

Solving (x − h)² = k by square roots worksheets

A shifted square adds one move to the square root method: after rooting both sides, the shift inside the bracket has to be undone. These free printable worksheets solve (x − h)² = k, and each one still has two answers.

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Ready to printSolving (x − h)² = k by square roots
Solving (x − h)² = k by square roots worksheet — (x − h)² = k, whole answers, free printable with answer key

The answer key prints on a separate page.

What's on this sheet

The square is already isolated, so the first move is the same as the bare case — take the root of both sides — but here it leaves x − h = ±√k rather than x by itself. For (x − 2)² = 9 that is x − 2 = ±3, and then the shift is undone by adding 2, giving x = 5 and x = −1. The ± carries through both branches, so the +3 and the −3 each finish as their own answer, and every step-by-step walk here keeps the two apart from the moment the root is taken.

Why this sheet works

This is the reason it is a separate sheet from x² = p: the subtraction inside the bracket means the root does not land on x directly, and a child has to resist reading the answer off before undoing the shift. Meeting it after the bare square is secure keeps the ± habit and the new undo-the-shift step from tangling.

How this one works

One question from this sheet, worked through a step at a time.

Solve (x − 4)² = 81

x − 4 = ±9
x = 4 ± 9
x = 13orx = −5
  1. Take the square root of both sides — both signs: x − 4 = ±√81 = ±9.
  2. Then add 4 to both sides: x = 4 ± 9.
  3. So x = 13 or x = −5 — both roots.