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Which value of c completes the square in the expression x2 + 14x + c?

A. –49
B. –7
C. 7
D. 49

Sagot :

Answer:

D. 49

Step-by-step explanation:

To complete the square, you have to take half of the value next to x, 14 in this case, and square that.

1/2 of  14 is 7

7 squared is 49

so, the final equation is x²+14x+49

Hope this helps!

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