02-10-2020
Mathematics

contestada

Solve the quadratic equation x(x+1)=8-x. Write your answer as a whole number or fraction

Respuesta :

mustapha16 mustapha16

02-10-2020

Answer:

x=-4 or 2

Step-by-step explanation:

x(x+1)=8-x

x^2+x=8-x

x^2+2x-8=0

x^2+4x-2x-8=0

x(x+4)-2(x+4)

(x-2)(x+4)=0

x-2=0

x=2

or

x+4=0

x=-4

Answer Link

Otras preguntas

when did the aryans invade the indus river valley

It took Tony 9 trips to the store to bring home 2,376 pounds of bricks.The weight of the bricks was the same for each trip. What was theweight of the bricks of

What does personification mean

What is the slope-intercept form of 6x −2y−4 = 0? Can you please explain with some details?

What kind of phrase is the underlined group of words? The house across the street has a large front door. A.appositive phrase B.adjective phrase C.adverb phr

how to find a percentage of a numberExample: 30% off of 120 dollars

What does then use of oracle bones tell us about the early Chinese?

Kelly sits on a rock. Her weight is an action force. Describe the reaction force.

What does then use of oracle bones tell us about the early Chinese?

Find the geometric mean of 5 and 125.