Question

Can someone help me with number 13 I need the equation fast

Answer 1

The expression is given as

`(-2+7i)(-1-6i)(6+3i)`

Solve and simplify the expression by opening the brackets

`(2+12i-7i-42i^2)(6+3i)`
`(2+5i+42)(6+3i)=(5i+44)(6+3i)_{}`
`30i+15i^2+264+132i`
`162i+264-15=162i+249`

Hence the answer is

`162i+249`