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 ( 49+ )
Otras preguntas
Which of the following is the sum of the polynomials 5x2 - 4x + 1 and -3x2 + x - 3 ? 2x2 + 3x + 2 8x2 - 5x - 2 2x2 - 3x - 2 -8x2 - 3x - 2
Is (0, 0) a solution of the system y>xy>x and x+y>0x+y>0?
What is next number after 2 7 8 3 12 9
_______reduce the physical and psychological symptoms of anxiety by reducing brain activity.
Anne has been observing human embryos in different stages. She wants to study the gastrula phase. How will she find it? by looking for the presence of the neur
Write this number as a percent? Help on this one please!
Consider the incomplete reaction below. NaOH + X mc005-1.jpg NaCH3COO + H2O What is X in this reaction? NH4OH H3PO4 H2CO3 CH3COOH
If 2+2=4 why is the answer fish
Which of the following is NOT an example of physical weathering? Wind blowing and eroding sandstone Acid rain dissolving limestone Ocean waves crashing again
A major objection to the activation-synthesis theory of dreams is that
