haleywillaert haleywillaert

01-03-2019
Mathematics

contestada

Factor 2x^2-4x-30 completely. A. 2(x-5)(x+3) B. (2x-5)(x+3) C. (2x+3)(x-5) D. 2(x-3)(x+5)

Respuesta :

01-03-2019

Answer:

2(x - 5)(x + 3)

Step-by-step explanation:

[tex]2x^2-4x-30\\\\=2\cdot x^2-2\cdot2x-2\cdot15\\\\=2(x^2-2x-15)\\\\=2(x^2+3x-5x-15)\\\\=2[x(x+3)-5(x+3)]\\\\=2(x+3)(x-5)[/tex]

Answer Link

Otras preguntas

How many ways can you pick a President, Vice President, Secretary and Treasurer from a group of 12 people? 479,001,600 19,958,400 20,736 11, 880

Which of the following sports does not require a basic level of fitness when starting out? a. water skiing b. orienteering c. snorkeling d. downhill skiing

Mi madre quiere que yo _______ a casa a las once de la noche. (regresar) regrese regresa regreso regresi

Someone help me with that question please

Cardinal Company is considering a five-year project that would require a $2,915,000 investment in equipment with a useful life of five years and no salvage valu

Reading that it is "dark outside and inferring that it is night is an inference of A. agency B. instrumentation C. location D. time

What was the result of the Chinese civil war that ended in 1949?

Explique qué es una secuencia narrativa.

Write two sentences for each word. I’ll mark brainliest

Do you think we have a power elite ruling? explain why.