Could you guys do these questions step by step? I have some difficulty understanding =/
Thank you very much!!
Is that right?
I just have one more question, it's really confusing me right now...
If x(4x+5) = Ax(2x+5)+Bx for all values of x, find the values of A and B.
My teacher taught me something like FOIL, which is first, outside, inner, last. So, I multiplied all of them together and I got but I don't know where to go from there. Any help?
Also, there's also dividing polynomials that I just don't get. I understand addition, subtraction, multiplication now but division is just... so confusing.
Like for what in the world am I supposed to do!?! And why is it subtract sign? What does it mean? There are questions like that have division sign, and all other signs. I realize I should show my steps, but I don't even know how to start these questions...
You will need to expand out the brackets and then "equate coefficients". This means that you use the fact that the coefficients of , x and 1 must be the same on both sides of the equals sign. This should net you A and BIf x(4x+5) = Ax(2x+5)+Bx for all values of x, find the values of A and B.
Break this down into steps like I did. Multiply out the last two factors, then multiply the third into it.