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Whakaroha
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Tohaina

9-30\sqrt{3}+25\left(\sqrt{3}\right)^{2}
Whakamahia te ture huarua \left(a-b\right)^{2}=a^{2}-2ab+b^{2} hei whakaroha \left(3-5\sqrt{3}\right)^{2}.
9-30\sqrt{3}+25\times 3
Ko te pūrua o \sqrt{3} ko 3.
9-30\sqrt{3}+75
Whakareatia te 25 ki te 3, ka 75.
84-30\sqrt{3}
Tāpirihia te 9 ki te 75, ka 84.
9-30\sqrt{3}+25\left(\sqrt{3}\right)^{2}
Whakamahia te ture huarua \left(a-b\right)^{2}=a^{2}-2ab+b^{2} hei whakaroha \left(3-5\sqrt{3}\right)^{2}.
9-30\sqrt{3}+25\times 3
Ko te pūrua o \sqrt{3} ko 3.
9-30\sqrt{3}+75
Whakareatia te 25 ki te 3, ka 75.
84-30\sqrt{3}
Tāpirihia te 9 ki te 75, ka 84.