nalla0five nalla0five

22-06-2021
Mathematics

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x^2+2x+7=21 the approximate value of the greatest solutoon to the equation, rounded to the nearest hundreth

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sqdancefan sqdancefan

22-06-2021

9514 1404 393

Answer:

x ≈ 2.87

Step-by-step explanation:

We can subtract 6 to put the equation into a form easily solved.

x^2 +2x +1 = 15

(x +1)^2 = 15

x +1 = √15 . . . . . for the greatest solution, we only need the positive root

x = √15 -1 ≈ 2.87

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