How do you factor by grouping #x^2 + 7x + 5x + 35#?
Grouping is a technique usually used when there is no factor common to all terms of a polynomial, but there are factors common to some of the terms, so I am not sure if this is the correct technique to answer this question.
Before we solve this problem, let me show you the FOIL method.
Begin by multiplying the First terms (
If we right that all out then we would have the equation
Matching these equations side by side it is clear that
When they are asking you to (group them) I assume that they are asking you to return them to the original format
Simply plug in 7 and 5 for "a" and "b" and you get your answer...