lilolexi
lilolexi
19-09-2014
Mathematics
Answered
How do you do [tex] x^{2} -9x=15[/tex]
Answer :
Аноним
Аноним
19-09-2014
[tex]x^2-9x=15\\x^2-9x-15=0\\a=1;\ b=-9;\ c=-15\\\Delta=b^2-4ac\to\Delta=(-9)^2-4(1)(-15)=81+60=141\\\\x=\frac{-b\pm\sqrt\Delta}{2a}\to x=\frac{9\pm\sqrt{141}}{2}[/tex]
Answer Link
VIEW ALL ANSWERS ( 26+ )
Other Questions
Find the number of distinguishable arrangements of the letters of the word million notice that there are two Is and two Ls
¿Cuál de las siguientes expresiones representa el doble de un número?A. [tex]\(2x\)[/tex]B. [tex]\(x^2\)[/tex]C. [tex]\(x + 2\)[/tex]
A distribution of values is normal with a mean of 239.5 and a standard deviation of 27.Find the probability that a randomly selected value is greater than 258.4
What is 18,000 expressed in scientific notation?A. [tex]$1.8 \times 10^{-4}$[/tex]B. [tex]$1.8 \times 10^4$[/tex]C. [tex][tex]$1.8 \times 10^{-5}$[/tex][/tex]D.
Scenario 36-1Suppose that in the first half of June 2022, the effects of a housing and financial crisis and an increase in world prices of oil and foodstuffs we
Find an equation for the line with the given properties. Express your answer using either the general form or the slope-intercept form of the equation.Perpendic
Exam 1: High School General Science - Part 1Instructions: Select the item that best answers the question or makes the statement true. In all cases, there is onl
The first step of the writing process, when you write down words and phrases to come up with ideas, is called:A. brainstormingB. making final changesC. editingD
Which represents the measures of all angles that are coterminal with a [tex]\(500^{\circ}\)[/tex] angle?A. [tex]\((40 + 360n)^{\circ}\)[/tex]B. [tex]\((140 + 36
Use the Laws of Logarithms to expand the expression.[tex]\[ \log_3(5x) \][/tex][tex]\[\square\][/tex]
Latin America is _____. the region in the Western Hemisphere south of North America where Romance languages are spoken the region in the southern-most tip of So
A cereal box has a height of 32 centimeters. It has a base with an area of160 square centimeters. What is the volume,in cubic centimeters,of the cereal box.
a cube has six congruent faces that are all _________.
Which of the following describes a referendum? (a)the ability of citizens to sell and manufacture alcohol. (b)the ability of citizens to remove a Senator. (c)th
Which of these recommendations was NOT a part of Hamilton’s Plan? instituting a national bank assuming state debts at par imposing excise duties and taxes postp
Which was not an achievement of W.E.B. Du Bois? first African American to earn a Harvard Ph.D. along with others, helped form the NAACP helped launch the Niagar
a cells relatively constant internal physical and chemical conditions are called?
In the Declaration of Independence, Thomas Jefferson argued for certain “unalienable rights” that were endowed by the Creator. Mark the statement if it refers t
98 is the product of Chrissy's height and 7 how do I make this a equation
how do cells in the ovary detect a hormone from the brain?