# How do you factor by grouping #x^2 + 7x + 5x + 35#?

##### 2 Answers

#### Answer:

#### Explanation:

Remember:

For more click here. If you are interested in general polynomial: Vieta's formulas.

#### Answer:

#### Explanation:

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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.

(x+a)(x+b)

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...