# algebra

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Evaluate and simplify in a+bi form:
(6-ã-18))+(2+ã-50)

• algebra -

• algebra -

(6-ã-18))+(2+ã-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 -

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 -

• algebra -

"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.

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