book Maths Puzzle Numerical Ability

Hannah Wants to hire a painter to paint her house. Painters plus charges $360 plus $12 per hour. Davis and Sons charges $279 plus $15 per hour. Write and solve an equation to detir

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book Other Question

How do you simplify ((1-2i)/(3+i)) and write in a+bi form? Divide.
1) -15xy - 10x
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5x

2) 2x2y - 6xy2 + 12xy
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2xy