3 years ago

Need help on this question

Mathematics

1 answer:

Soloha48 [4]3 years ago

7 0

Answer:

Both equal 4

Step-by-step explanation:

(a-b)^2

(7-9)^2

(-2)^2

a^2-2ab+b^2

7^2-2(7)(9)+9^2

49-126+81

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