PrinceMitchem PrinceMitchem

17-06-2015
Mathematics

contestada

If 4x^2 - 100 = 0, the roots of the equation are
(1) -25 and 25 (3) -5 and 5
(2) -25, only (4) -5, only

Respuesta :

17-06-2015

[tex]4x^2-100=0 \ \ \ \ \ \ |+100 \\ 4x^2=100 \ \ \ \ \ \ \ \ \ \ \ |\div 4 \\ x^2=25 \\ x=\pm \sqrt{25} \\ x=\pm 5 \\ x=-5 \hbox{ or } x=5[/tex]

The answer is (3) -5 and 5.

Answer Link

Otras preguntas

Vocabulaire Reproduire ce tableau. Le compléter en relevant dans le texte des expressions qui situent la scène dans l'espace. Objets décrits La rivière Un coura

I need help understanding the process to solve this. Please help me! thank you :)

Suppose you had just watched a breaking competition. Use details from the Article to write a fictional journal or blog entry describing the event.

Your unique perspective affects your approach to literature, including Nectar in a Sieve. Think about your own life experiences and how they may be similar to o

O-7 O-1 07 O 20 What is the value of the expression below? (9+3)+4(6-7)

Model this expression on a number line

How can you be sure that this experience you are having right now "real" and not an illusion or hallucination?

If two metals are in contact heat can flow if and only if ———

How do all of these points relate to the topic of the lesson? What do they have in common? In the space below, write 1-2 paragraphs discussing the relationship

Click the Reset All button to restore all the settings to zero. Set a small constant a on the Acceleration slider and check the Show Vector box below it. Click