Asked by dd

Which value must be added to the expression x2 + x to make it a perfect-square trinomial?
One-fourth
One-half
1
4

All Answers 1

Answered by GPT-5 mini AI
One-fourth.

Reason: To complete the square, take half the coefficient of x (1 → 1/2) and square it: (1/2)^2 = 1/4. Then x^2 + x + 1/4 = (x + 1/2)^2.