Solve x2 - 6x + 15 = 0 by completing the square. The solutions are x= and x =

Mathematics

1 answer:

juin [17]2 years ago

4 0

Answer:

${}^{6} \sqrt{3a} = {}^{6} \sqrt{3a} \\ {}^{3} \sqrt{5a} = {}^{6} \sqrt{5 {}^{2} } a {}^{2} = {}^{6} \sqrt{25} \\ \sqrt{za} = {}^{6} \sqrt{2 {}^{3} } a {}^{3} = {}^{6} \sqrt{8a {}^{3} }$

You might be interested in

What is the solution set of the quadratic equation 8x2 +2x +1 =0?

Sidana [21]

$\displaystyle\\
 8x^2 +2x +1 =0\\\\
x_{12}=\frac{-b\pm \sqrt{b^2-4ac}}{2a}=\frac{-2\pm \sqrt{2^2-4\cdot 8 \cdot 1}}{2\cdot 8}=\\\\
=\frac{-2\pm \sqrt{4-32}}{16}=\frac{-2\pm \sqrt{-28}}{16}=\frac{-2\pm \sqrt{4\cdot 7\cdot(-1)}}{16}=\\\\
=\frac{-2\pm 2i\sqrt{7}}{16}=\frac{-1\pm i\sqrt{7}}{8}= -\frac{1}{8}\pm \frac{\sqrt{7}}{8}i\\\\
x_1 = \boxed{-\frac{1}{8}+ \frac{\sqrt{7}}{8}i}\\\\
x_2 = \boxed{-\frac{1}{8}- \frac{\sqrt{7}}{8}i}\\\\
x_1,~x_2~\in \mathbb{C}$

4 0

3 years ago

What is the simplest form of 5/6 divided by 1/2

nekit [7.7K]

Answer:

$\frac{ \frac{ \frac{5}{6} }{1} }{2} = \frac{5}{3} = 1 \times \frac{2}{3}$

4 0

2 years ago

Read 2 more answers

What's the answer ???????

Nonamiya [84]

I believe it's both a and b

5 0

2 years ago

Read 2 more answers

A researcher conducting a telephone survey is concerned about possible sources of bias. Of the following, which is the best exam

Alex_Xolod [135]

Answer:

C. Many of the people selected to participate in the survey who do not respond might have opinions different from those who do respond.

Step-by-step explanation:

The survey is said to be biased by non-response survey if many people did not respond to the survey this might be much affected the result of survey.

The reason that people might be refuse to participate in the survey that survey may include any embarrassing information, illegal activities or personal details so many people did not respond to the survey. Also these peoples has different opinion from other peoples who respond in the survey. Thus this cause biased.

7 0

3 years ago

Find the slope of the line that passes through (7,5) and (4, 9)

Alecsey [184]

Answer:

-4/3

Step-by-step explanation:

(9-5)/(4-7)

4/-3

-4/3

7 0

2 years ago