SOLUTION: find the gcf of the product (15y+20)(15y+21) and help would be helpful. Thank you

Question 376624: find the gcf of the product (15y+20)(15y+21)
and help would be helpful. Thank you
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!

Start with the given expression.

Now let's FOIL the expression.

Remember, when you FOIL an expression, you follow this procedure:

Multiply the First terms:.

Multiply the Outer terms:.

Multiply the Inner terms:.

Multiply the Last terms:.

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So we have the terms: , , ,

Now add every term listed above to make a single expression.

Now combine like terms.

So FOILs to .

In other words, .

Now because the number 3 is the GCF of all the terms, this means that the GCF is 3.

If you need more help, email me at jim_thompson5910@hotmail.com

Also, feel free to check out my tutoring website

Jim
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