Thursday

April 24, 2014

April 24, 2014

Posted by **Allie** on Monday, January 31, 2011 at 9:03pm.

x^2-6x+25=0

I know the answer is 3-4i and 3+4i

however, I do not know how to go about finding the these solutions

Thanks :)

- Complex Numbers -
**helper**, Monday, January 31, 2011 at 10:03pmx^2 - 6x + 25 = 0

Subtract 25 from both sides:

x^2 - 6x = -25

Add 9 to both sides:

x^2 - 6x + 9 = -16

Factor the left hand side:

(x-3)^2 = -16

Take the square root of both sides:

|x - 3| = 4i

Eliminate the absolute value:

x - 3 = -4i or x - 3 = 4i

Add 3 to both sides:

x = 3 - 4i or x - 3 = 4i

Add 3 to both sides:

x = 3 - 4i or x = 3 + 4i

- Complex Numbers -
**Allie**, Monday, January 31, 2011 at 11:33pmOh thank you so much

i forgot that when you that the square root of a negative you get the complex #

- Complex Numbers -
**helper**, Tuesday, February 1, 2011 at 2:31pmYou are welcome

**Related Questions**

Algebra 2 - Operations with Complex Numbers Simplify. 1. sqrt(-144) 2. sqrt(-64x...

Algebra 2 - Write the expression as a complex number in standard form. 3-3i/4i I...

Algebra - How would I write a quadratic equation having the given numbers as ...

Math - Imaginary - (i)(4i)(-4i) it is 4i^2(-4i) = -16i^3 ? If it is not right, ...

Pre Calculus - Find the roots of the function g(x)=x^3 +16x a)0,4i, -4i b)0,-4,-...

Algebra2 - Simplify: 1.SquareRoot(-144) 2.SquareRoot(-64x^4) 3.SquareRoot(-13)*...

ALGEBRA!! - calculate P(i) for the following polynomial p(x)=x3+2x2-5x+8 Find | ...

math help people lik really desperate!! - ok i have to divide complex numbers: ...

check my work please! - ok i have to divide complex numbers: question is: 1-2i+i...

algebra maginary numbers - (3+4i)(3-4i)