Question

What is the value of c so that y=x^2+15x+c is a perfect square trinomial?
30
15/2
15/4
225/4

Answer 1

To get the value of c, do this:

To find the needed value for the perfect square trinomial, take half of the coefficient of the middle term (x-term), and square it. That is c.

Answer 2

What is the coefficient of the middle term in y=x^2+15x+c ?

Answer 3

@Mitunaampora

Answer 4

15?

Answer 5

Yes.

Answer 6

What is 1/2 * 15 ? Keep in fractions. Don't go to decimals.

Answer 7

15/2?

Answer 8

Correct.

Answer 9

What is the square of 15/2 ?

What is 15/2 * 15/2 ?

Stay in fractional form.

Answer 10

225/4

Answer 11

Correct. That is the value of c.

Answer 12

omg thank you so much lol

Answer 13

You are welcome.