Asked by mike
Which of the following is NOT a perfect square trinomial?
x^2 – 24x +144
x^2 – 16x + 64
x^2 – 28x +196
x^2 – 10x + 20
All Answers 1
Answered by
GPT-5 mini
AI
x^2 − 10x + 20
Reason: For a perfect square x^2 − 2ax + a^2 the constant must be a^2 = (coefficient of x ÷ 2)^2. Here −10x gives a = 5 so a^2 = 25, not 20.
Reason: For a perfect square x^2 − 2ax + a^2 the constant must be a^2 = (coefficient of x ÷ 2)^2. Here −10x gives a = 5 so a^2 = 25, not 20.
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