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Whakaroha
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Ngā Raru Ōrite mai i te Rapu Tukutuku

Tohaina

25-\left(4x^{2}+28x+49\right)
Whakamahia te ture huarua \left(a+b\right)^{2}=a^{2}+2ab+b^{2} hei whakaroha \left(2x+7\right)^{2}.
25-4x^{2}-28x-49
Hei kimi i te tauaro o 4x^{2}+28x+49, kimihia te tauaro o ia taurangi.
-24-4x^{2}-28x
Tangohia te 49 i te 25, ka -24.
25-\left(4x^{2}+28x+49\right)
Whakamahia te ture huarua \left(a+b\right)^{2}=a^{2}+2ab+b^{2} hei whakaroha \left(2x+7\right)^{2}.
25-4x^{2}-28x-49
Hei kimi i te tauaro o 4x^{2}+28x+49, kimihia te tauaro o ia taurangi.
-24-4x^{2}-28x
Tangohia te 49 i te 25, ka -24.