anonymous
  • anonymous
When solving x2 + 14x + 9 = 0 by completing the square, which of the following is a step in the process? (x − 7)2 = 58 (x − 7)2 = 40 (x + 7)2 = 58 (x + 7)2 = 40 Note: the "2" are exponents
Mathematics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
katieb
  • katieb
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
mathmale
  • mathmale
First: a bit of housekeeping. Please denote exponentiation by using the symbol " ^ " or by drawing your input:|dw:1449876177127:dw|
anonymous
  • anonymous
Thank You ive been stuck on this for quite sometime.
mathmale
  • mathmale
Complete the square: x2 + 14x + 9 = 0 Look at the coefficient of the x term. it's 14. Take HALF of this coefficent, obtaining 7, and square that: Result is 49. Add, and then immediately subtract, 49 in the given equation.

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

mathmale
  • mathmale
Thus,\[x^2+14x+9 \]
mathmale
  • mathmale
becomes \[x^2 + 14x +(7)^2 - (7)^2 + 9 =0\]
mathmale
  • mathmale
Now ask yourself: What is the square root of the expression given by the first 3 terms? Express that as a perfect square, using " ^ " to denote exponentiation. Does this help you decide which of the four possible answers is the correct one? Hope so.
anonymous
  • anonymous
It does thank you !
mathmale
  • mathmale
Great!! Then,\[(x+7)^2 - 49 +9 = 0\]
mathmale
  • mathmale
combine the -49 and the 9 to get what? Move this result to the right side of your equation. Take the square root of the left side, then the square root of the right side, being sure to write "plus or minus" in front of that 40, on the right side. You weren't asked to solve this problem, but it'd be worth doing so for the practice.
whpalmer4
  • whpalmer4
Ah, Warren, I see you also do the "split 0 into its positive and negative sides" approach that I use :-)

Looking for something else?

Not the answer you are looking for? Search for more explanations.