# MATH

posted by .

Write the following expression as a complex number in standard form.

2-7i/-3+8i

• MATH -

multiply top and bottom by (-3 - 8i) to get

(2-7i)(-3-8i) / (-3+8i)(-3-8i)

(-6 + 21i - 16i + 56i^2) / (9 + 64)

(-62 + 5i)/73

## Similar Questions

1. ### Algebra 2

Write the expression as a complex number in standard form. (5-2i)-2(3+i) Please explain how to do this. I don't know how.
2. ### math

write the expression as a complex number in standard form 1+2i ----- 3-8i
3. ### Algebra

Write the expression as a complex number in standard form. (2-3i)-(6-5i)
4. ### math

write the expression -5i(1 + 3i) as a complex number in standard form.
5. ### math

write number as a complex number in standard form 6i + (-2 -7i)
6. ### Algebra 2

Dividing: Write the expression as a complex number in standard form 1) 2+5i/5+2i 2) 6-i√2/6+i√2 for the first one I solved it and I only got this far: 10+21i-10i^2/25-4i^2
7. ### Algebra 2

Write the expression as a complex number in standard form. 3-3i/4i I'm not sure about this problem, but I think the answer is -3/4i-3/4. Could anyone help me please?
8. ### trigonometry

1)Solve and write in standard form: 4x^2-4x+21=0 2)Find the standard form of the complex number. 8(cos pi/2 + i sin pi/2) Thanks everyone!
9. ### Algebra

Write the expression as a complex number in standard form. ____5____ 2- i =2+5i Did I get the right answer?
10. ### Algebra 2

Write the Expression as a complex number in standard form. 5i(3+2i)(8+3i)

More Similar Questions