Is 4x2 20x 25 is a perfect square trinomial?
Find value of k to make polynomials perfect square trinomial. 4x^2 -kx +25 and 1/25 x^2 +kx + 4
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完全二乗三項式を決定し因数分解する方法を学びます
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二次方程式: 4x^2 - 20x + 25 = 0 を解く
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