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valkas [14]
3 years ago
15

(y+6)^2-(y-2)^2 I got 16y+26 but it is wrong?

Mathematics
1 answer:
Gemiola [76]3 years ago
5 0

Answer:

16y + 32

Step-by-step explanation:

Expand each term.

(y+6)² - (y-2)²

= (y+6)(y+6) - (y-2)(y-2)

= y² + 12y + 36 - (y² - 4y + 4)

Subtract the second group by changing each term's signs

= y² + 12y + 36 - y² + 4y - 4

Collect like terms

= 16y + 32

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