solve the equation using the principle of square roots

F(x) = (x-4)^2.  Find x so the f(x) = 12
in Algebra 2 Answers by

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
To avoid this verification in future, please log in or register.

1 Answer

If f(x)=12, (x-4)^2=12. Taking square roots of each side of the equation we have x-4=sqrt(12), which is the same as sqrt(4*3). We know sqrt(4)=2, so this boils down to 2*sqrt(3)=3.4641 approx. So x=4+3.4641=7.4641.

by Top Rated User (1.2m points)

Related questions

1 answer
Solve for y using the multiplication principle: y/5= -6
asked Apr 29, 2013 in Algebra 1 Answers by anonymous | 577 views
2 answers
Solve using the addition principle: -8 + y = 17
asked Mar 16, 2013 in Algebra 1 Answers by anonymous | 1.3k views
1 answer
Solve using the addition principle y - 3/4 = 5/6
asked Dec 13, 2012 in order of operations by momobradman2810 Level 1 User (180 points) | 832 views
1 answer
Solve using the multiplication principle. 4b = -76
asked Aug 4, 2012 in Pre-Algebra Answers by anonymous | 1.2k views
1 answer
simply square roots using factors sqrt252
asked Sep 6, 2011 in Algebra 1 Answers by anonymous | 874 views
1 answer
Using the first principle,
asked Jan 17, 2016 in Calculus Answers by McCquabena Bannor Level 4 User (7.5k points) | 559 views
Welcome to MathHomeworkAnswers.org, where students, teachers and math enthusiasts can ask and answer any math question. Get help and answers to any math problem including algebra, trigonometry, geometry, calculus, trigonometry, fractions, solving expression, simplifying expressions and more. Get answers to math questions. Help is always 100% free!

Most popular questions within the last 3000 days

  1. 50+50-25X0+2+2= (19)
  2. it takes 10 road workers 5 days to complete a road repair when working 2 hours a day.Working at the same pace,how many days will it take 2 people working 5 hours a day to finish it? (3)
  3. Solve 15 -1(12÷4+1)? (4)
  4. 8:4(5+2) (3)
  5. How can i represent 1/3; 3/3; 7/3; 10/3 and 15/3 on a number line? (1)

Most popular tags

87,516 questions
100,279 answers
2,420 comments
732,474 users