Math, asked by guptapappu42468, 6 months ago

fill in the missing term ,making a perfect trinomial square:?-12x+9

Answers

Answered by Vaish2934

1

Answer:

12x6 +9= 72+9 =81

81 is perfect square of 9

Answered by mail2alok2007

1

Answer:

The third term will be +4x^2

Step-by-step explanation:

This because (a+b)^2=(a)^2+(b)^2-2ab

So here -12x+9+4x^2 can be written as -2×3×2x+(3)^2+(2x)^2

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