5.3 repeating, I believe.
No idea because there is no image
<em>ANSWER :</em>
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<em>I THINK ITS B </em>
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EXPLANATION :
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Okay so first you want to simplify the given equation (7x+3y)(7x-3y)
in order to do this you multiply the first number of the first equation (7x) with the first number of the second equation (7x) this gives you 49x^2
Now you want to multiply the second number of the first equation (3y) by the second number of the second equation (-3y) this gives you -9y^2
Its as easy as pie!
