Aromātai
-\frac{49b^{2}}{100}+a^{2}
Whakaroha
-\frac{49b^{2}}{100}+a^{2}
Tohaina
Kua tāruatia ki te papatopenga
a^{2}-\left(0.7b\right)^{2}
Ka taea te whakareanga te panoni ki te rerekētanga o ngā pūrua mā te ture: \left(a-b\right)\left(a+b\right)=a^{2}-b^{2}.
a^{2}-0.7^{2}b^{2}
Whakarohaina te \left(0.7b\right)^{2}.
a^{2}-0.49b^{2}
Tātaihia te 0.7 mā te pū o 2, kia riro ko 0.49.
a^{2}-\left(0.7b\right)^{2}
Ka taea te whakareanga te panoni ki te rerekētanga o ngā pūrua mā te ture: \left(a-b\right)\left(a+b\right)=a^{2}-b^{2}.
a^{2}-0.7^{2}b^{2}
Whakarohaina te \left(0.7b\right)^{2}.
a^{2}-0.49b^{2}
Tātaihia te 0.7 mā te pū o 2, kia riro ko 0.49.
Ngā Tauira
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