wonderwoman7
wonderwoman7
03-03-2018
Mathematics
contestada
I don’t know how to solve the equation
Respuesta :
MarkV
MarkV
03-03-2018
To solve this equation we have to factor.
We are looking for 2 numbers with a sum of -3, and multiplied they have to be -28. These numbers are -7 and 4.
So:
[tex] {x}^{2} - 3x - 28 = 0[/tex]
[tex](x - 7)(x + 4) = 0[/tex]
[tex]x - 7 = 0 \: \: \: \: x + 4 = 0[/tex]
[tex]x = 7 \: \: \: \: x = - 4[/tex]
Answer Link
VER TODAS LAS RESPUESTAS ( 61+ )
Otras preguntas
(?,7) is on the line y=2x+5 y = 2 x + 5 . Find the other half of the coordinate.
When describing the properties of an insulator you say, "Insulators will A.inhibit the flow of neutrons." B.inhibit the flow of electrons." C.allow the flow of
A common literary device to leave readers in the middle of the action. Also the name of a Hollywood blockbuster starring Sylvester Stallone
Which measure of center best represents each set of data? goals scored during hockey season: 7, 6, 9, 3, 12, 7, 2, 10, 7, 8
Change the following from an adjective to an adverb. suave suavamente suaveomente suavmente suavementeIts one of these choices .But I am not sure what it ca
In the ___________massacre of 1866, chief red cloud and his warriors massacred a column of 80 u.s. soldiers after ambushing them.
Which of these mathematical advances occurred under the Guptas during the golden age in India? Select all that apply. a.discovered the ratio of pi (∏) b
a pipefitter must connect two pipes as shown the run is 35 ft while the set is 23-ft how long of a pipe will he need and what will be the connecting angles roun
What best characterizes Iraq and Afghanistan today? Both nations have stable governments. Both nations are experiencing periods of peace. Both nations struggl
lying quad stretches are an effective static stretching for runners because they
