Wednesday

October 1, 2014

October 1, 2014

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

(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 6:02pmTo 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 6:38pmIsn't it same as 8+2i&radic2

- algebra -
**MathMate**, Sunday, December 27, 2009 at 7:03pmThe 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 - 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 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. ...

Algebra - Simplify and write in scientific notation. (9 X 10^-3)^2 A. 8.1 X 10^-...

Intermediate Algebra - Evaluate or simplify the numerical expression. 11 1/2 . ...