y=(2-i)(4+i)

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Solution for y=(2-i)(4+i) equation: 


Simplifying
y = (2 + -1i)(4 + i)

Multiply (2 + -1i) * (4 + i)
y = (2(4 + i) + -1i * (4 + i))
y = ((4 * 2 + i * 2) + -1i * (4 + i))
y = ((8 + 2i) + -1i * (4 + i))
y = (8 + 2i + (4 * -1i + i * -1i))
y = (8 + 2i + (-4i + -1i2))

Combine like terms: 2i + -4i = -2i
y = (8 + -2i + -1i2)

Solving
y = 8 + -2i + -1i2

Solving for variable 'y'.

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

Simplifying
y = 8 + -2i + -1i2

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