bewellplus.gsu.edu
anissayou anissayou
  • 31-03-2014
  • Mathematics
Answered

Solve equation using square root property

X2-8X+16=1

Verified Answer :

Lilith
Lilith Lilith
  • 01-04-2014

x^2-8x+16=1\\ \\x^2-8x+16-1=0\\ \\x^2-8x+15=0\\ \\\Delta = b^{2}-4ac =  (-8)^{2}-4115=64-60=4  \\ \\x_{1}=\frac{-b-\sqrt{\Delta }}{2a} =\frac{8- \sqrt{4}}{2}=\frac{8-2}{2}= \frac{6}{2}=3\\ \\x_{2}=\frac{-b+\sqrt{\Delta }}{2a} =\frac{8+ \sqrt{4}}{2}=\frac{8+2}{2}= \frac{10}{2}=5\\ \\Answer : x=3 \ \ or \ \ x = 5

Answer Link

Related Questions

help me fast im leaveing and i need to get done fast
Earthsmay have formed from water vapor given off by volcanoes
You are conducting a study on the health of people who have been exposed to radiation and those who have not been exposed to radiation Which of these methods of
12 15 2314 45 12 34 13 explain how u found your answer
A rocket is launched at 85 feet per second from a launch pad that is 28 feet above the ground Which equation can be used to determine the height of the rocket a
What is 156 of 12769800000
Noor rode her bike two fifth mile in one twelfth hour At this rate how far would Noor ride her bike in 1 hour
What types of businesses are likely to have an informal corporate culture
true or false the nucleus contains neutrons and electrons
what is 32025 in a mixed number