f(x)=(x-5)(x-4i)(x+4i)

Simple and best practice solution for f(x)=(x-5)(x-4i)(x+4i) 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 f(x)=(x-5)(x-4i)(x+4i) equation: 


Simplifying
f(x) = (x + -5)(x + -4i)(x + 4i)

Multiply f * x
fx = (x + -5)(x + -4i)(x + 4i)

Reorder the terms:
fx = (-5 + x)(x + -4i)(x + 4i)

Reorder the terms:
fx = (-5 + x)(-4i + x)(x + 4i)

Reorder the terms:
fx = (-5 + x)(-4i + x)(4i + x)

Multiply (-5 + x) * (-4i + x)
fx = (-5(-4i + x) + x(-4i + x))(4i + x)
fx = ((-4i * -5 + x * -5) + x(-4i + x))(4i + x)
fx = ((20i + -5x) + x(-4i + x))(4i + x)
fx = (20i + -5x + (-4i * x + x * x))(4i + x)
fx = (20i + -5x + (-4ix + x2))(4i + x)

Reorder the terms:
fx = (20i + -4ix + -5x + x2)(4i + x)
fx = (20i + -4ix + -5x + x2)(4i + x)

Multiply (20i + -4ix + -5x + x2) * (4i + x)
fx = (20i * (4i + x) + -4ix * (4i + x) + -5x * (4i + x) + x2(4i + x))
fx = ((4i * 20i + x * 20i) + -4ix * (4i + x) + -5x * (4i + x) + x2(4i + x))

Reorder the terms:
fx = ((20ix + 80i2) + -4ix * (4i + x) + -5x * (4i + x) + x2(4i + x))
fx = ((20ix + 80i2) + -4ix * (4i + x) + -5x * (4i + x) + x2(4i + x))
fx = (20ix + 80i2 + (4i * -4ix + x * -4ix) + -5x * (4i + x) + x2(4i + x))

Reorder the terms:
fx = (20ix + 80i2 + (-4ix2 + -16i2x) + -5x * (4i + x) + x2(4i + x))
fx = (20ix + 80i2 + (-4ix2 + -16i2x) + -5x * (4i + x) + x2(4i + x))
fx = (20ix + 80i2 + -4ix2 + -16i2x + (4i * -5x + x * -5x) + x2(4i + x))
fx = (20ix + 80i2 + -4ix2 + -16i2x + (-20ix + -5x2) + x2(4i + x))
fx = (20ix + 80i2 + -4ix2 + -16i2x + -20ix + -5x2 + (4i * x2 + x * x2))
fx = (20ix + 80i2 + -4ix2 + -16i2x + -20ix + -5x2 + (4ix2 + x3))

Reorder the terms:
fx = (20ix + -20ix + -4ix2 + 4ix2 + 80i2 + -16i2x + -5x2 + x3)

Combine like terms: 20ix + -20ix = 0
fx = (0 + -4ix2 + 4ix2 + 80i2 + -16i2x + -5x2 + x3)
fx = (-4ix2 + 4ix2 + 80i2 + -16i2x + -5x2 + x3)

Combine like terms: -4ix2 + 4ix2 = 0
fx = (0 + 80i2 + -16i2x + -5x2 + x3)
fx = (80i2 + -16i2x + -5x2 + x3)

Solving
fx = 80i2 + -16i2x + -5x2 + x3

Solving for variable 'f'.

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

Divide each side by 'x'.
f = 80i2x-1 + -16i2 + -5x + x2

Simplifying
f = 80i2x-1 + -16i2 + -5x + x2

Reorder the terms:
f = -16i2 + 80i2x-1 + -5x + x2

See similar equations:

| -8-6(3-9)= | | F(x+9)=x^2-2x-9 | | 6y+(x-y)-(3xy+7y)= | | -2x+6(x-1)+3-(4-x)=-(x+5)-5 | | Y=3-.75x | | 9m+m=90 | | -6240=x^4 | | 12=7e^2t | | (4.25/5)=(x/4) | | 12=7e^12t | | 8(x-5)+7(-4x-1)=-21(x+1)-8 | | 9(k+7)-(-9k-9)=17k | | 9(x-4)=1+8x | | 7x+3-3x=5+3x-8 | | T=MN | | 14x+8y+3(2x+4y)= | | M=NT | | log(x^6/z) | | 5(3x+45+2)=65 | | m^4+m^3+m^2-m-2=0 | | 50=a+(-1)160 | | 100=a+(-1)0 | | 100=a+(-1)15 | | P=48-5Q | | 22-6p=19-5p | | 7x^2=225 | | ((ln(ln(4x)))/4x)dx | | 350=350 | | 2+2-2-3+1=0 | | (15x^5-9ux^3)/(9yx^2x^6) | | 4x-5=9+x | | d=7.2in |

Equations solver categories