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lyudmila [28]
3 years ago
13

I’m having a bit of trouble please help me

Mathematics
1 answer:
Vanyuwa [196]3 years ago
8 0

Answer:

wouldnt it be -4 -4??since it going from 4 to 4 maybe

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Step-by-step explanation:

(a + b - c)(a + b + c)

1. expand

(a^2 + ab + ac + ba + b^2 + bc - ca - cb - c^2)

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(a^2 + b^2 - c^2 + ab + ba + ac - ca + bc - bc)

3. add and subtract

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