Wednesday

March 4, 2015

March 4, 2015

Posted by **Nathan** on Monday, April 9, 2012 at 9:34am.

9x^2 + 49

- Math -
**Reiny**, Monday, April 9, 2012 at 10:01amhow about ...

(3x + 7i)(3x - 7i) ?

check:

(3x + 7i)(3x - 7i)

= 9x^2- 49i^2, but i^2= -1

= 9x^2 - 49(-1)

= 9x^2 + 49

**Answer this Question**

**Related Questions**

Math - Factor the polynomial as the product of factors that are irreducible over...

algebra - x^2+225 ..factor over complex numbers?

algebra - x^2+225 ... factor expression over the complex numbers?

Precalc, i really don't get my hw - how do i do this? factor x^4-x^2-20 over ...

math-complex numbers - Sketch the sets of complex numbers in the complex plane ...

Math - I am in the 5th grade and my homework tonight is about complex numbers. I...

Math (Complex Numbers) - Let a,b,c be complex numbers satisfying a+b+c=abc=1 and...

Pre-cal - The equation of the line joining the complex numbers -5 + 4i and 7 + ...

Precalculus - Let z and w be complex numbers such that |2z - w| = 25, |z + 2w...

algebra - It is not solvable by that method, shanaid. You have to get all the ...