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Home Q & A Board Science-Related Homework Help Mathematics Calculus
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bio_man bio_man
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5 years ago Edited: 5 years ago, bio_man
Answer:

(x + Δx)² = (x + Δx)(x + Δx)

We 'expand' (aka FOIL) by multiplying each term:

x*x = x²
x*Δx = xΔx
Δx*x= xΔx
Δx*Δx = Δx²

xΔx + xΔx = 2 xΔx
Source  How to FOIL:
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#1
5 years ago
Thanks for answering!
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