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

On bowed string instruments, sliding the hand along the string while bowing it produces a ________ effect.

Which types of triangles can have three angles that measure less than 90°? equilateral triangle acute triangle isosceles triangle right triangle

Use the variable w for the unknown number

a metamorphic rock can also be thought of as a rock that changes. what causes the rock to change?

4e^2x-6=10[tex]4e^2x-6=10[/tex]

Unemployment income is a non-qualifying source of income.

why isn’t breathing considered a life function?

in a compound, chemichal energy is contained in the ?

what is the slope of the line

please help will mark brainlest!