If $Z_{1}=4i^{40}-5i^{35}+6i^{17}+2$, $Z_{2}=-1+i$ where $i=\sqrt{-1}$, then $|Z_{1}+Z_{2}|=$
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Logic Tip: The triplet $(5, 12, 13)$ is a very common Pythagorean triple. Recognizing standard Pythagorean triples can save you time when calculating the modulus of a complex number or the magnitude of a vector.