Thursday
October 23, 2014

Homework Help: Math Algebra

Posted by Rosa on Tuesday, June 5, 2007 at 11:08pm.

Resolve(17x+14x + 9) (-13x +6x - 12)

30xsquared+20x+21

I'll try to be helpful and show the work. This is the method I learned last quarter.
(17x"sq"+14x+9)
+ (13x"sq"+6x+12)
=
(30X"sq"+20x+21)
I used the vertical method but the step are the same either way.

Step 1: Remove parentheses
Step 2: Combine like terms
Step 3: Simplify

I hoped I helped. Polynomials can be rather simple if you know the short cuts.
oh, and if you use the vertical method, don't forget to change the signs. When subtracting a negative it becomes adding a positive.

could you help me with this problem? y=3(x+5)(x-2)...the answer is supposed to be y=3xsquared+ 9x-30...how did they get the -30

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