Respuesta :

Answer:

Option "A"

15a2b2 – 20a2b + 6ab2 – 4ab + 7

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Answer:

The other addend is [tex]15a^2b^2-20a^2b+6ab^2-4ab+7[/tex].

Step-by-step explanation:

Let the two polynomial are A and B.

One addend is

[tex]A=-5a^2b^2+12a^2b-5[/tex]

The sum of two polynomials is

[tex]A+B=10a^2b^2-8a^2b+6ab^2-4ab+2[/tex]

Subtract polynomial A from both the sides.

[tex]B=10a^2b^2-8a^2b+6ab^2-4ab+2-A[/tex]

[tex]B=10a^2b^2-8a^2b+6ab^2-4ab+2-(-5a^2b^2+12a^2b-5)[/tex]

[tex]B=10a^2b^2-8a^2b+6ab^2-4ab+2+5a^2b^2-12a^2b+5[/tex]

Combine like terms.

[tex]B=(10a^2b^2+5a^2b^2)+(-8a^2b-12a^2b)+6ab^2-4ab+(2+5)[/tex]

[tex]B=15a^2b^2-20a^2b+6ab^2-4ab+7[/tex]

Therefore the other addend is [tex]15a^2b^2-20a^2b+6ab^2-4ab+7[/tex].