Question

If x2 + mx + m is a perfect-square trinomial, which equation must be true?
A. x2 + mx + m = (x – 1)2
B. x2 + mx + m = (x + 1)2
C. x2 + mx + m = (x + 2)2
D. x2 + mx + m = (x + 4)2

Answer 1

Answer:

Step-by-step explanation:

Given  

If x2 + mx + m is a perfect-square trinomial, which equation must be true?

A. x2 + mx + m = (x – 1)2

B. x2 + mx + m = (x + 1)2

C. x2 + mx + m = (x + 2)2

D. x2 + mx + m = (x + 4)2

A perfect square trinomial is

The square of first term binomial is x^2

The twice the product of binomial;s first and last term is m x

The square of the last binomial term is m

So (x + 1)^2 = x^2 + m x + m

  (x + 1)^2 = x^2 + 2 x + 1

Answer 2

Answer:

C

Step-by-step explanation:

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