Question

ab (c2 + 1) - c (a² + b²)

Answer 1

Answer:

ab(c)^2 + an -c (a)^2-c(b)^2

Answer 2

Step-by-step explanation:

1−a)(1−c−b+bc)

=1−c−b+bc−a+ac+ab

=1−(a+b+c)+(ab+bc+ac)

=1−1+ab+bc+ac

=

2

2(ab+bc+ac)

=

2

(a+b+c)

2

−(a

2

+b

2

+c

2

)

=

2

1−21

=−10

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