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 ( 38+ )
Other Questions
Propane and oxygen react according to the equation: C₃H₈(g) + 5O₂(g) → 3CO₂(g) + 4H₂O(g). How many grams of water can be produced from the complete combustion o
Describe what happens when blood in capillaries flows past cells
You are standing 1 meter from a squawking parrot. If you move to a distance three meters away, the sound intensity will be what fraction of its original value?
Adam tried to compute the average of his 7 test scores. He mistakenly divided the correct sum of all of his test scores by 6, which yielded 84. What is Adam’s c
How many square units are in the greatest area that can be enclosed by a rectangle whose perimeter is 20 units?
which is longer 635 millimeters or 535 centimeters ?
in what way is a gene pool representative of a population
Three individuals form a partnership and agree too divide the profits equally. X invest -9,000 , Y invest 7,000, Z invest 4,000. How much less does X receive if
How do you pronounce the letter "X" in Spanish?
Due to a membership drive for a public television station, the current membership is 125% of what it was a year ago. The current membership in 1200. How many me
