Complex numbers and display/simplification

testcom.exam

{
	name: testcom
	questions: [
				{
				name: Complex Test
				statement: """Express the following in the form $a+bi$ where $a$ and $b$ are real. """
				variables: {
				
				a4: "s4*random(1..9)"
				b4: "s1*random(1..9)"
				a5: "s4*random(1..9)"
				b5: "s1*random(1..9)"
				s4: "random(1,-1)"
				s1: "random(1,-1)"
					
				}
				parts:[
						{
							type: GapFill
							prompt: """$\simplify[all]{({a4}+{b4}*i)/({a5}+{b5}*i)} = \;\;$[[0]]."""
							
							gaps: [
									{type: jme
									answer: "{(a4+b4*i)/(a5+b5*i)}"
									answersimplification:"all,fractionNumbers"
									marks: 1
									checkingType: AbsDiff
									}
							]
						}
				]
		}
	]	
}