04-10-2015
Mathematics

contestada

what a^2-2a-3=0 by solving equations by completing the square

Respuesta :

konrad509 konrad509

04-10-2015

[tex]a^2-2a-3=0\\ a^2-2a+1-4=0\\ (a-1)^2=4\\ a-1=-2 \vee a-1=2\\ a=-1 \vee a=3[/tex]

Answer Link

Otras preguntas

What Evidence from the text suggests that Macbeth is prepared to die? Macbeth. Seyton! -I am sick at heart, When I behold- Seyton, I say!- This push Will. Chee

Can someone annotate this for me: A Jelly-FishBy Marianne MooreVisible, invisible, a fluctuating charman amber-tinctured amethyst inhabits it, your arma

My Notes OAsk Your Tea The radioactive isotope of lead, Pb-209, decays at a rate proportional to the amount present at time t and has a half-life of 3.3 hours.

A spider crawling across a table leaps onto a magazine blocking its path. The initial velocity of the spider is 0.870 m/s at an angle of 35.0Â° above the table,

A)If the rms value of the electric field in an electromagnetic wave is doubled, by what factor does the rms value of the magnetic field change? B)If the rms val

1. A 20 kg object is thrown with an initial upward velocity of 2 m/s. If air resists motion of the object by 4 N for each m/s, what is the terminal velocity of

The lands the Netherlands have reclaimed from the sea are known as polders. True False

[15 points] Compute ffR2(x + 1)y2 dA, R = [ 0, 1] x [0,3), by Riemann sum definition. You must use the Riemann sum definition to receive credit.

The orbit of a certain a satellite has a semimajor axis of 1.7 x 107 m and an eccentricity of 0.25. What are the satellite's perigee and apogee (in km)?

In Fareway address according to the excerpt how does George Washington most hope to be remembered by his fellow citizens?

Q&A Education