DrWhoTardis
DrWhoTardis
02-06-2015
Mathematics
contestada
solve for x: 2xsquared+4x-16=0
Respuesta :
Panoyin
Panoyin
02-06-2015
2x² + 4x - 16 = 0
2(x²) + 2(2x) - 2(8) = 0
2(x² + 2x - 8)
=
0
2 2
x² + 2x - 8 = 0
x =
-(2) ± √((2)² - 4(1)(-8))
2(1)
x =
-2 ± √(4 + 32)
2
x =
-2 ± √(36)
2
x =
-2 ± 6
2
x = -1 ± 3
x = -1 + 3 U x = -1 - 3
x = 2 x = -4
Answer Link
VER TODAS LAS RESPUESTAS ( 95+ )
Otras preguntas
(8k+6) to the second power
If an element has a charge of 3+, how many more protons does it have than electrons?
My team and I or me and my team?
one example of symbolism in the poem highwayman
What is the difference between velocity and speed??
What tool can help readers understand the meaning of an unfamiliar word ? •Context clues •Spelling rules •Capitalization •Part of speech
Heat energy moves from an area where there's ________ energy to an area where there's ________ energy. a. less, more b. more, less c. hot, cold d. cold, hot
What is an example of how you can offer assistance to enhance the overall health of others? (A) Offer to cook a well-balanced meal for your family (B) Encoura
Explain what you see in the image on the left, verses the image on the right. What a person sees when looking at the above two pictures depends on what concept
what happens when magnesium reacts with iodine to make magnesium iodide?
