Tuesday

October 21, 2014

October 21, 2014

Posted by **Lucy** on Sunday, February 3, 2008 at 11:43am.

I multiplied (7x)(7x) first and got x squared + 14x + 49. Then I multiplied each of those by 5x to the 3rd and came up with an answer of: 5x to the 5th + 70x to the 4th + 245x to the 3rd. Did I get this one correct??

- Algebra II -
**drwls**, Sunday, February 3, 2008 at 12:58pm<<I multiplied (7x)(7x) first and got x squared + 14x + 49.>>

Well you did that wrong, as well as some other steps.

(7x)^2 = 49x^2

The polynomial you wrote is (x+7)^2

5x^3*(7x)^2 = 5*49 x^5 = 245 x^5

**Answer this Question**

**Related Questions**

Math - I need help with this problem. In decimal form, write the ratio of the ...

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

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

algebra - if a+b=1 and a squared + b squared=2 what does a to the 3rd + b to the...

Mathematics - (14x^7 multiplied by y^5 multiplied by x^6 divided by 21x^12 ...

Algebra - Hi I am taking my final right now and I have a few problems I am stuck...

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

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

Pre-Algebra - I need to check my work... estimate the following products or ...

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