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Find the value of c that completes the square. x'2+42x+C
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3 votes
Find the value of c that completes the square. x'2+42x+C

User Saumya Agnihotri
by
3.7k points

1 Answer

4 votes

Answer:

441

Explanation:

x^2 + 42x + c

Take the coefficient of x

42

Divide by 2

42/2 = 21

Square it

21^2 =441

This is the value of c

User Jterry
by
4.4k points
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