## THIS USER ASKED ๐

**What polynomial identity should be used to prove that 252 = (20 5)2?**

## THIS IS THE BEST ANSWER ๐

25ยฒ = (20 + 5) ยฒ Here is a binocular:

(a + b) ยฒ = aยฒ + 2 ab + bยฒ

625 = 20ยฒ + 2 ยท 20 ยท 5 + 5ยฒ

625 = 400 + 200 + 25

625 = 625 (correct)

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