Question

Expand the following
Correct answer would be marked as brainliest​

Answer 1

Answer:

Use formula. a^2+b^2+c^2+2ab+2bc+2ac

1. (3a-5b-7c)^2

• 3a^2+25b^2+49c^2 - 30ab + 70bc - 42ac.

2. (1+2x-3y)^2

• 1+4x^2+9y^2+4x - 12xy -6y.

3. (p+5q+2)^2

• P^2+25q^2+4 + 10pq+ 20q + 4p

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