What is factor 8cos^2(x)-2cos(x)-1 ?

The solution to factor 8cos^2(x)-2cos(x)-1 is (4cos(x)+1)(2cos(x)-1)

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

factor 8cos^2(x)-2cos(x)-1

factor

8 cos^{2} (x) - 2 cos (x) - 1

(4 cos (x) + 1) (2 cos (x) - 1)

Solution steps

8 cos^{2} (x) - 2 cos (x) - 1

Break the expression into groups

= (8 cos^{2} (x) + 2 cos (x)) + (- 4 cos (x) - 1)

Factor out

2 cos (x)

from

8 cos^{2} (x) + 2 cos (x) : 2 cos (x) (4 cos (x) + 1)

Factor out

- 1

from

- 4 cos (x) - 1 : - (4 cos (x) + 1)

= 2 cos (x) (4 cos (x) + 1) - (4 cos (x) + 1)

Factor out common term

4 cos (x) + 1

= (4 cos (x) + 1) (2 cos (x) - 1)

3 e f - 3 e + 2 f - 2

x^{12} + 6 x^{8} + 12 x^{4} + 8

(5 x + 1)^{2} + 15 (5 x + 1) + 56

2 cos^{2} (x) - 3 cos (x) - 2

(x + 3)^{3} + 8 x^{3}

What is factor 8cos^2(x)-2cos(x)-1 ?
The solution to factor 8cos^2(x)-2cos(x)-1 is (4cos(x)+1)(2cos(x)-1)