Question

(2x + 5)² - (20-5)^2​

Answer 1

Step-by-step explanation:

$( {2x + 5)}^{2} - (20 - 5) ^{2} \\ \\ 4 {x}^{2} + 25 + 20x - {(15)}^{2} \\ \\ 4 {x}^{2} + 20x + 25 - 225 \\ \\ {x}^{2} + 20x - 200$

Answer 2

Answer:

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