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Tohaina

250+\frac{1}{2}\left(-98\right)\times 25^{2}
Whakareatia te 10 ki te 25, ka 250.
250+\frac{-98}{2}\times 25^{2}
Whakareatia te \frac{1}{2} ki te -98, ka \frac{-98}{2}.
250-49\times 25^{2}
Whakawehea te -98 ki te 2, kia riro ko -49.
250-49\times 625
Tātaihia te 25 mā te pū o 2, kia riro ko 625.
250-30625
Whakareatia te -49 ki te 625, ka -30625.
-30375
Tangohia te 30625 i te 250, ka -30375.