nonsense answer will be reported
9. [16-(a+b)²]
10. (m-n)²-(m+n)²
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nonsense answer will be reported
9. [16-(a+b)²]
10. (m-n)²-(m+n)²
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Answer:
1. −a²−2ab−b²+16
2. −4mn
Step-by-step explanation:
1. [16 - 1(a(a + b) + b(a + b))]
[16 - 1 (a² + ab) + b(a + b))]
[16 - 1 (a² + ab + ab + b²)]
[16 - 1 (a² + 2ab + b²)]
rearrange it =
−a²−2ab−b²+16