SOLUTION: find the product (10+7x)^2 a)100+140x+49x^2 b)100+49x^2 c)100+140x+7x^2 d)100x^2+140x+49

Question 147739: find the product
(10+7x)^2
a)100+140x+49x^2
b)100+49x^2
c)100+140x+7x^2
d)100x^2+140x+49
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!

Start with the given expression.

Expand. Remember something like .

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:.

Now collect every term to make a single expression.

Now combine like terms.

So FOILS to .

In other words, .

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