juanitob juanitob

05-04-2017
Mathematics

contestada

Factor 2x 4 - 20x 2 - 78.
A) 2(x2 - 3)(x2 - 13)
B). 2(x2 + 3)(x2 - 13)
C). 2(x2 - 3)(x2 + 13)

Respuesta :

05-04-2017

2(x^4 - 10x^2 - 39)
2(x^2 - 13)(x^2 + 3)

Letter B

Answer Link

KitKat69 KitKat69

05-04-2017

Divide everything by 2: 2(x4-10x2-39). Now factor: 2(x2+3)(x2-13) or B. We know it's not A because the last variable is negative so the signs must be different. :)

Answer Link

Otras preguntas

Earth is a close approximation of a natural closed system. What are some ways that living in a closed system affects each of us.

simplify (1/x) + (1/(x+h)

Rachel and David share 40 biscuits between them in the ratio 2:3, How many biscuits do they each get?

Find 4 consecutive odd integers where the product of the two smaller numbers is 64 less than the product of the two larger numbers.

Which ancient civilization is associated with the Twelve Tables, an extensive road system, and the poets Horace and Virgil?

select the product of (3x-4)(3x4)

David helped his father stock the pond with baby catfish and blue gill. They put in a total of 75 fish. If the number of blue gill was doubled and the number of

simplify (1/x) + (1/(x+h)

Find 4 consecutive odd integers where the product of the two smaller numbers is 64 less than the product of the two larger numbers.

Which expression can be used to change 75 kilometers per hour to meters per minute?