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bezimeni [28]
3 years ago
7

Dimitri is solving the equation x^2 – 10x = 21. Which value must be added to both sides of the equation to make the left side a

perfect-square trinomial?
a. 0
b. 4
c. 25
d. 100
Mathematics
2 answers:
Salsk061 [2.6K]3 years ago
3 0
We are given the expression x 2 - 10x = 21  where a number is to be added in both sides to complete the equation by completing the square. In this case, (-10/2)^2 is equal to 25. The number that is added in the left side of the equation is equal then to 25. 
andrew-mc [135]3 years ago
3 0

Answer:

The answer is C. 25

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

Let T be the total number of students in the band.

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