Posted by **tommy** on Thursday, October 29, 2009 at 6:25pm.

write the expression in the form bi, where b is the real number

squareroot-16

squareroot-25

squareroot-3

squareroot-5

- calculus -
**bobpursley**, Thursday, October 29, 2009 at 6:28pm
what is 4i squared? 5i?

- calculus -
**Reiny**, Thursday, October 29, 2009 at 6:28pm
√-16

= √-1√16

= 4i

now you do the others the same way.

- calculus -
**Collin**, Friday, October 30, 2009 at 2:35pm
sqrt(-16)=sqrt(-1)sqrt(16)=i sqrt(16)=4i

sqrt(-25)=sqrt(-1)sqrt(25)=i sqrt(25)=5i

I think you can see it now. Just remember i=sqrt(-1). And don't forget your properties of sq-roots.

## Answer This Question

## Related Questions

- Algebra - I need some help figuring these. Compute each product and simplify ...
- Algebra - I need some help figuring these. Compute each product and simplify the...
- math - find the standard form of the complex number shown below 9(cos 11pi/6 + ...
- math 11 review - A couple of extra practice questions I can't remember how to do...
- algebra - ^5 squareroot of x^20 *my answer x^4 ^3 squareroot of 729/343 my ...
- math - Classify each statement as sometimes, always, or never true. A. 2^(2/3)*4...
- math homework - find a unit vector in the direction of u u = (-5, -12, 9) a. (-5...
- Algebra - I am not too sure about this problem. Can you please help me? Graph ...
- Geometry - Determine whether the triple of numbers can be the sides of a right ...
- Algebra2 - Simplify: 1.SquareRoot(-144) 2.SquareRoot(-64x^4) 3.SquareRoot(-13)*...

More Related Questions