Question 1089863: If 40x^2 + 102x + c = (4x + 13)( ax + b) , what is the value of c?
Answer by EMStelley(208)   (Show Source):
You can put this solution on YOUR website! 
Simplifying the right hand side, we have
Now, notice that we have an x^2 term on each side, an x term on each side, and a constant term on each side. Because the two sides are equal to each other, each of the individual terms must be equal. So, for the x^2 term, we have that:
For the x term, we have:
And lastly, for the constant term, we have:
And we have a value for b, so
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