Asked by juliana
Solve the quadratic equation by completing the square.
x^2 + 14x + 35 = 0
and
x^2 + 8x = 5
x^2 + 14x + 35 = 0
and
x^2 + 8x = 5
Answers
Answered by
Reiny
I will do the first, you show me how you did the second, ok?
x^2 + 14x + .... = -35 + .....
x^2 + 14x + <b>49</b> = -35 + <b>49</b>
(x+7)^2 = 14
x+7 = ± √14
x = -7 ± √14
x^2 + 14x + .... = -35 + .....
x^2 + 14x + <b>49</b> = -35 + <b>49</b>
(x+7)^2 = 14
x+7 = ± √14
x = -7 ± √14
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