I am having trouble with a couple of questions in terms of the proccess of solving the questions:
1 If x-3 is a factor is x^2+ax+b, then 3a+b+10 equals?
2 The x-axis intercepts of the graph with equation y=(x+a)^2(x^2-b^2), where a and b are positive constants are?
I will be greatly apprecieated if any of you would have the time to help and explain these questions for me.
If you plug in x = 3 then you get
which is obviously zero.
According to the text of your questionI still don't see how that helps :/
That means: Plug in x = 3 and see what you can say about the term you'll get.