Posted by **Sarah** on Sunday, December 27, 2009 at 5:47pm.

Evaluate and simplify in a+bi form:

(6--18))+(2+-50)

- algebra -
**Sarah**, Sunday, December 27, 2009 at 5:48pm
- radical

- algebra -
**Reiny**, Sunday, December 27, 2009 at 5:58pm
(6--18))+(2+-50)

= (6 - √-18) + (2 + √-50)

=(6 - 3√2√-1) + (2 + 5√2√-1)

=(6 - 3√2 i) + (2 + 5√2 i)

= 8 + 2√2 i

- algebra -
**MathMate**, Sunday, December 27, 2009 at 6:02pm
To show the square-root sign (√), you can type:

"& r a d i c ;"

but omit the intervening spaces and the double quotes.

I assume you are asking to simplify:

(6-√(-18))+(2+&raidc;(-50))

We first remove the outer parentheses and convert the radicals to i to get:

6-√(-18)+2+√(-50)

8 - √(18)i + √(50)i

= 8 - 3√2 i + 5√2 i

= 8 +2√2 i

- algebra -
**Sarah**, Sunday, December 27, 2009 at 6:38pm
Isn't it same as 8+2i&radic2

- algebra -
**MathMate**, Sunday, December 27, 2009 at 7:03pm
The question asked for:

"Evaluate and simplify in **a+bi** form:"

In any case the "i" is usually put after the coefficient. √2 is considered part of the coefficient.

## Answer this Question

## Related Questions

- Algebra 2 Answer Check - Simplify. 1. 5√6 - √24 A: 3√6 2. ...
- algebra - evaluate 2/3 divided by 2, simplify 2 exponent 9 divided by 2 exponent...
- Algebra 1 - Plz help me with the following problems. Simplify. 5^-1(3^-2) ...
- Algebra 2 - 1. Simplify ((-2x^4y^7)/(x^5))^3. Assume all variables are nonzero...
- Algebra 1 Answer Evaluation (Reiny) - Evaluate each expression for the given ...
- algebra 2 - 1.Simplify the difference. n^2 - lOn+24 9 / n^2 - 13n + 42 7 A. n...
- Algebra - Evaluate a+b/10 for a=66 and b=4 a+b/10 = (simplify the answer)
- algebra - evaluate and if possible simplify x-5/15 for x=-5 18/-35 divide by 22/...
- algebra 1A - evaluate: (-1)^7 (-1)^7= simplify your answer. is this correct -(1...
- algebra - Need some one check my homework. Evaluate 3p/q when p=2 and q=6. ...

More Related Questions