4cos^2(2x)+8cos^2x=7

Simple and best practice solution for 4cos^2(2x)+8cos^2x=7 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 4cos^2(2x)+8cos^2x=7 equation: 


Simplifying
4cos2(2x) + 8cos2x = 7

Remove parenthesis around (2x)
4cos2 * 2x + 8cos2x = 7

Reorder the terms for easier multiplication:
4 * 2cos2 * x + 8cos2x = 7

Multiply 4 * 2
8cos2 * x + 8cos2x = 7

Multiply cos2 * x
8cos2x + 8cos2x = 7

Combine like terms: 8cos2x + 8cos2x = 16cos2x
16cos2x = 7

Solving
16cos2x = 7

Solving for variable 'c'.

Move all terms containing c to the left, all other terms to the right.

Divide each side by '16os2x'.
c = 0.4375o-1s-2x-1

Simplifying
c = 0.4375o-1s-2x-1

See similar equations:

| M^4-8m=0 | | 4cos^22x+8cos^2x=7 | | -X-4X=-8-7 | | -7-(-9y+5)=6(4y-4)-4 | | 4sin(x)-6cos(x)=0 | | 3x^2+17x+90=0 | | 1+10a=12a-5 | | -6p-12=-8+7p | | -2+12=44 | | 25-5c= | | 2x+2x+4=48in | | (2x-4)(x+2)=0 | | 30b-42= | | x^3+2x-13=0 | | 5x-2+6=25 | | y=sin(0.5t) | | 2(x^2-3)=0 | | 58(5n)=43 | | 8x+5=15-2x | | 7(m-3)=-21+7m | | F(x)=3xln(6x)-3x | | (x-1)(3x+2)=-7(x-1) | | 2=D+0.25 | | x^2+y^2=8100 | | 11.62y-92.96+3.23y=3.23y-26.56+26.56 | | 40b+16+11+17b= | | 5(4t-1)=3t-22 | | 2x^2+4x-6-12=0 | | 500=2(60+w)+2w | | 6y-20-2y-4= | | 2x+4x-6-12=0 | | 0=2x^3+3x^2-120 |

Equations solver categories