Make a change of variable, x = Py, that transforms the following quadratic form into one with no cross-product terms. -2x-2x3-8x1x2 +14x₁x3+14x₁x4 +14x₂x3 + 14x2x4-12x3x4 Construct P For the associated quadratic form, enter the eigenvalues in decreasing order (including multiplicities) into the answer box below, separated with commas.

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