How to solve (4s+5t)(4s-5t)

1 answer:

marin [14]4 years ago

7 0

(4s+5t)(4s-5t)

16s^2 - 20st + 20st - 25t^2

Combine like terms...

-20st + 20st = 0

The answer is:

16s^2 - 25t^2

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