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What number must you add to complete the square x^2+10x=8 A. 25 B. 5 C. 15 D. 10
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4 votes
What number must you add to complete the square x^2+10x=8

A. 25
B. 5
C. 15
D. 10

User Raoot
by
5.3k points

1 Answer

5 votes
To complete the square you take the coefficient of the 'b' term (10), divide it by 2 (10/2), then square it (5^2 = 25). This is the number you add.
Letter C 25

User Dhruv Batheja
by
6.2k points
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