How do you simplify $(4-3i)(2+5i)$ and write in a+bi form?

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Answer 1 · 2018-04-21T18:17:54

$23+14i$

$•color(white)(x)i^2=(sqrt(-1))^2=-1$

$"expand factors using FOIL"$

$rArr8+20i-6i-15i^2$

$=23+14ilarrcolor(blue)"in standard form"$

How do you simplify (4-3i)(2+5i)(4-3i)(2+5i) and write in a+bi form?