greyhhun greyhhun
  • 12-08-2018
  • Mathematics
contestada

Find the value of n such that x2– 3x + n is a perfect square trinomial.

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altavistard
altavistard altavistard
  • 12-08-2018

Hello!

First, a word to the wise: Please type x2– 3x + n as x^2– 3x + n. The " ^ " denotes exponentiation, whereas x2 is meaningless.

To make x^2– 3x + n into a perfect square trinomial, take half of the coefficient of x (that is, half of -3) and square the result:


x^2– 3x + (3/2)^2, or x^2– 3x + 9/4. The desired value of n is then 9/4.


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