If x2 + 6x + c = (x + d) 2, then d

Question

Mathematics

Kyra Faulkner

5 December, 20:52

If x2 + 6x + c = (x + d) 2, then d

+3

Answers (2)

Know the Answer?

Deborah Waller · Answer 1

d = 3

Step-by-step explanation:

Expand the right side and compare the coefficients of like terms

x² + 6x + c = x² + 2dx + d²

For the 2 sides to be equal then coefficients of like terms must be equal

compare coefficients of x - terms, then

2d = 6 ⇒ d = 3

Braylon · Answer 2

c=9

d=3

Step-by-step explanation:

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