Question

1. What number should be added to the expression x^2+2x to change it into a perfect square trinomial?

A. 1

B. 2

C. 4

D. 9

2. What number should be added to the expression x^2+14x to change it into a perfect square trinomial?


A. 7

B. 14

C. 28

D. 49

Answer 1

I think 1 is 1 I hope this help u.

Answer 2

1) Here, Polynomial = x² + 2x
So, 1/2 (2) = 1 & it's square = 1² = 1

In short, Your Answer would be Option A

2)Here, Polynomial = x² + 14x
So, 1/2 (14) = 7 & it's square = 7² = 49

In short, Your Answer would be Option D

Hope this helps!