How do you find the product $(12t-5)(12t+5)$ ?

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Answer 1 · 2017-04-22T21:32:34

See below.

This is in the form $(a-b)(a+b)$ , an identity that is equivalent to $a^2-b^2$ (by expansion).

So,

$(12t-5)(12t+5)=144t^2-25$ .

To see how this occurs, we can FOIL.

$(12t-5)(12t+5)=144t^2+60t-60t-25=144t^2-25$

How do you find the product (12t-5)(12t+5)(12t-5)(12t+5)?