Is 9x^2-30x+25 a perfect square trinomial

9x²-30x+25=(3x-5)²

Step-by-step explanation:

This is a perfect square trinomial.

In general (a±b)² = a²± 2ab +b²

Notice that both 9x² = (3)² and 25 = 5² are perfect squares, so the only question is whether the middle term matches when you square (3x-5), the minus sign being chosen to at result in a negative coefficient for the middle term .

(3x-5)² = (3x)² - 2(3x)(5) +5² = 9x² - 30x + 25

I hope this helps you

597

step-by-step explanation:

the answer is the third / last answer

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