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Let x^2+15x=49. What values make an equivalent number sentence after completing the square?
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Let x^2+15x=49. What values make an equivalent number sentence after completing the square?

User Peter Seale
by
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1 Answer

3 votes
take 1/2 of linear cofient (15)
15/2=7.5
sqquare it and add to both sides
56.25

x^2+15x+56.25=49+56.25
factor perfect square
(x+7.5)^2=105.25


the value would be 56.25


User Mani Tajaddini
by
6.4k points
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