Q. 11i⋅(−8+10i)=Your answer should be a complex number in the form a+bi where a and b are real numbers.
Write down complex numbers: Write down the complex numbers to be multiplied.We have two complex numbers: 11i and (−8+10i). We need to multiply these two complex numbers together.
Use distributive property: Use the distributive property to multiply the complex numbers.Multiplying 11i by each term in the complex number (−8+10i) gives us:11i⋅(−8)+11i⋅(10i)
Calculate the products: Calculate the products.11i×(−8)=−88i (since i is the imaginary unit and −8 is a real number)11i×(10i)=110i2 (since i×i=i2)
Simplify the expression: Simplify the expression.We know that i2=−1, so we can replace i2 with −1 in the expression:−88i+110(−1)This simplifies to:−88i−110
Write final answer: Write the final answer in the form a+bi. The real part a is −110, and the imaginary part b is −88. So the product of 11i and (−8+10i) is: −110−88i
More problems from Write equations of cosine functions using properties