marlisamoore
marlisamoore
01-09-2017
Mathematics
contestada
can someone help me with this question
Respuesta :
Banabanana
Banabanana
01-09-2017
[tex] x^{2} +2x-5=0 \\ D=b^2-4ac=2^2-4*1*(-5)=4+20=24 \\ x_{1,2}= \frac{-bб \sqrt{D} }{2a}= \frac{-2б \sqrt{24} }{2}=\frac{-2б 2\sqrt{6} }{2}= \frac{-2}{2}б \frac{2 \sqrt{6} }{2} =-1б \sqrt{6} [/tex]
Answer:
B. x = -1 - √6
C. x = -1 + √6
Answer Link
VER TODAS LAS RESPUESTAS ( 65+ )
Otras preguntas
What is the solution to the inequality (−4+8x)+3>x/−4 ?
An economic outcome is said to be efficient if the economy is a getting all it can get from the scarce resources it has available. b conserving on resources, ra
Solve for x. x - 2(2 - 3/ 2 x) = 2(4 - x) + 10 A) - 11 3 B) - 3 11 C) 11 3 D) 3 11
What is a central idea
10 POINTS How do the ideas included in "Cool Eye Tricks" interact with one another? A. Each successive idea provides readers with additional information about
A 585−g piece of copper tubing is heated to 89.5°C and placed in an insulated vessel containing 159 g of water at 22.8°C. Assuming no loss of water and a heat c
A SCHOOL IS PLANNING A FIELD TRIP. THERE ARE A TOTAL OF 611 STUDENTS AND 91 SEATS ON EACH BUS. HOW MANY BUSES ARE NEEDED TO TAKE THE TRIP?
8. Estimate the maximum volume percent of Methanol vapor that can exist at standard conditions. Vapor pressure = 88.5 mm Hg in air.
CAN SOMEONE PLEASE HELP ME??
a) From the set {-8, -2/3, 5i, √(-9), √2, 0, 3+3i, -2.35, 7} i) List the set of Natural Numbers ii) List the set of Integers iii) List of the set of Rational Nu
