Question

I WILL BECOME A FAN AND GIVE A MEDAL

What is the value of c so that y = x^2 + 10x + c is a perfect square trinomial?

A. 10
B. 25
C. 50
D. 100

Please tell me the answer and how you got it! Thanks ya'all!

Answer 1

B, u have to divide 10 by to then square it

Answer 2

becasuse 10 is the 2nd coefficient

Answer 3

Thanks so much! Could you help me with another one please? :)

Answer 4

sure :)

Answer 5

What is the value of c so that x^2+9x+c is a perfect square trinomial?

A. 81
B. 81/2
C. 81/4
D. 9/2

Thanks again! :)

Answer 6

is half the b term squared

Answer 7

C, 4.5^2

Answer 8

\(\ (a+b)^2 = a^2 + 2(a)(b) + b^2 \)

A is x and B would be 5 because \(\ \dfrac{10}{2} = 5 \)

\(\ x^2 + 2(x)(5) + 5^2 = x^2 + 10x + 25 \)