 Hi, and welcome to the session. Let's discuss the following question. The question says express each of the complex number given in the exercises 1 to 10 in the form a plus iota b. Given complex number is 1 minus iota raised to the power 4. Let's now proceed on with our solution. We have to express the complex number 1 minus iota raised to the power 4 in the form a plus iota b. Right, we can write this complex number as whole square of square of 1 minus iota. Right, let's now find the square of 1 minus iota. We will use the identity of a minus b whole square. So this is equal to 1 square plus iota square minus 2 into 1 into iota. Right, iota square is equal to minus 1, so we have 1 minus 1 minus 2 iota and this is equal to minus 2 iota. So square of 1 minus iota is equal to minus 2 iota. So this expression is equal to square of minus 2 iota. The square of minus 2 is 4 and square of iota is iota square. You know that iota square is equal to minus 1, so we have minus 4. Thus our required solution is minus 4. So we have expressed the given complex number in the form a plus iota b where a is equal to minus 4 and b is equal to 0. So this completes the session. Bye and take care.