exam Maths Puzzle Numerical Ability

HI! May I get some help with this expression?

Evaluate the expression and write the result in the form a + bi.

(6 + 5i)^-1

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exam Other Question

88. Business and finance. The price of an item is given by p = 2x(2nd power)-100. Find the polynomial that represents the revenue generated from the sale of x items. please help me solve 4 1/2 Z= 6 THANK YOU NEED IT ASAP