SOLUTION: What is (k+5) (k-5) in foil method & can yu write out the steps

Question 724755: What is (k+5) (k-5) in foil method & can yu write out the steps
Found 2 solutions by jim_thompson5910, stanbon:
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
First: k*k = k^2

Outer: k*(-5) = -5k

Inner: 5*k = 5k

Last: 5*(-5) = -25

Add up the terms

k^2 + (-5k) + 5k + (-25) = k^2 - 25

So the answer is k^2 - 25
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
What is (k+5) (k-5) in foil method & can yu write out the steps
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First*First: k*k = k^2
Outer*Outer: -5k
Inner*Inner: +5k
Last*Last : 5^2 = 25
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Add the four products to get: x^2 - 25
===========================================
Cheers,
Stan H.
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