Monday

January 26, 2015

January 26, 2015

Posted by **Mike** on Thursday, June 11, 2009 at 8:25pm.

(h+k)(h squared-2hk+3k squared)

haha, I don't know how to make an exponent on the computer :-), but anyway, please help me figure it out!

- algebra -
**Reiny**, Thursday, June 11, 2009 at 9:29pmpowers are usually written this way...

(h+k)(h^2 - 2hk + 3k^2)

which becomes

h^3 -2h^2k + 3hk^2 + kh^2 - 2hk^2 + 3k^3

= h^3 - h^2k + hk^2 + 3k^3

- algebra -
**Mike**, Thursday, June 11, 2009 at 9:31pmoh, I tried to solve it and got 3hk^2+h^3 I'm guessing that's wrong?

- algebra -
**Mike**, Thursday, June 11, 2009 at 9:34pmI solved it like this: h^3-2hk^2+3hk^2+1hk^2-2hk^2+3hk^2=3hk^2+h^3

- algebra -
**Reiny**, Thursday, June 11, 2009 at 9:55pmfor the terms inside

-2h^2k + h^2k = -h^2k

and

3hk^2 - 2hk^2 = hk^2

look at my expansion and compare it to yours,

a term in hk^2 is not the same as a h^2k term.

**Answer this Question**

**Related Questions**

math - i am having a minor difficulty i've been stuck for over an hour and don't...

math - Factor (15a squared bc squared -9a squared b to the fourth c) by finding ...

algebra 2 multiple choice HELP - find f(a), if f(t) = 2t2(squared)-t-2 A. 2(a+t)...

Math11U - A Pythagorean Triple is a set of integers that satisfy the Pythagorean...

10th Grade Algebra - Please help me with these factorise algebra questions!!! 1...

Algebra - i need to use the quadratic formula 2 solve these 4 questions: 1. x(...

College Algebra - Can someone check my answer please! I'm not sure this is right...

Algebra - Which equation could be used to find the dimensions of a room that has...

Math - Find the shortcut. Solve these problems. Then find and explain a shortcut...

math - How do i find the area of a triangle? For example: A squared + b squared...