gabbiemars12 gabbiemars12

01-05-2017
Mathematics

contestada

Using the zero product property to find the solutions to the equation x^2 + x-30= 12

Respuesta :

PHDFlopper PHDFlopper

01-05-2017

first, factor x^2+x-42:
(x^2-6x)+(7x-42)
x(x-6)+7(x-6)
(x+7)(x-6)=0
solve using zero product property:
x+7=0
x=-7
x-6=0
x=6

final solutions to the equation:
x=6;x=-7

Answer Link

Otras preguntas

In the library there are 200 books. 58 of them are non-fiction. What percentage of the books are non-fiction?

What is the solution to this system of linear equations: y-x=4 and y+2x=1 1) (-1,3) 2) (0,4) 3) (1,-1) 4) (-3,3)

How is carbon dioxide obtained?

A pack of 9 toilet rolls costs £4.23 A pack of 4 toilet rolls costs £1.96 Which pack gives the better value for money? You must show all your working.

a piece of wood is 180cm long, Tom cuts it into three pieces in the ratio 2:3:4 Work out the length of the longest piece

Put brackets in the expression below so that it's value is 45.024. 1.6 + 3.8 * 2.4 *4.2 (*= times )

Factor completely, the expression: 2x^3-2x^2-12x

What are the origins of prevailing ideas about natural, ideal, and deviant bodies in sports and in society?

what are the landforms of vermont

a piece of wood is 180cm long, Tom cuts it into three pieces in the ratio 2:3:4 Work out the length of the longest piece