anissayou anissayou

31-03-2014
Mathematics

Answered

Solve equation using square root property

X2-8X+16=1

Verified Answer :

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

In what way did traders passing through Arabia influence its culture

which of the following is true of southern beliefs prior to the civil war

right in article on ways of solving problems of a divorce

Data Set 1 has a mean of 54 and a MAD of 4 Data Set 2 has a mean of 60 and a MAD of 2 What can you conclude about the two distributions Choose exactly two answe

The Sedition Act made it illegal to a buy Liberty bonds b work in factories c discuss anything negative about the government the Constitution the army or the na

If you grow 523 eggplants and sell 378 how many do you have left A 145 B 197 C 901 D 154

your brother is about to enter secondary schoolwrite a letter to him stating at least three pretten he is likely to face in school and suggesting ways of solvin

Orlan stated Narcissism is important as long as one doesnt get lost in onesreflectionTrueFalse

Which is true about an antagonist

list facts of protons electrons and neutrons

Web Analytics