Homework Help: Algebra

Posted by Eliza on Wednesday, November 19, 2008 at 7:50pm.

How can this be? I am supposed to solve (-3-8i)-(-2-9i). Once it is broken down, you get (-3+2)-(8i-9i) I got -1+-1i, but my book said the answer is -1+i. Thanks for your help.

Algebra - bobpursley, Wednesday, November 19, 2008 at 7:59pm
The book is ccorrect: -i(8-9)=-i(-1)=i

Answer this Question

Related Questions

algebra - ceate a quadratic equation with the given solutions 8i and -9i
math - 2i/4-8i 2i/4-8i * (4+8i)/(4+8i) then i multiplied the top and bottom and ...
math - Simplify: (8-6i)/ 3i: A. 6 B. (6 + 8i)/ -3 C. (6 + 8i)/ 3 D. 2 + 8i
functions - Suppose p (x) is a polynomial with real coefficients and p (4 + 9i)=...
math - Simplify: (-1-2i)+(4-6i) I get 3-8i and 5-8i... confused, which one is it...
Algebra 2 - solve the equation: x^2-x+2=0 is 1+9i/2 the correct answer?
Algebra 2 - What is the absolute value of 6-8i ?
Math (Grade 12) - I need help with this problem: 9i - (5i + 4i)^2 The correct ...
vectors - The position vectors, r km, and the velocity vectors, v km/h, of two ...
math - Solve and simplify (3+9i)-(12-5i) 8+6i/7-5i

For Further Reading

First Name:
School Subject:
Answer: