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Answer:
Step-by-step explanation:
2x+5)−(2x−5)
To find the opposite of 2x−5, find the opposite of each term.
2x+5−2x−(−5)
The opposite of −5 is 5.
2x+5−2x+5
Combine 2x and −2x to get 0.
5+5
Add 5 and 5 to get 10.
10
Answered by
1
Answer:
(2x + 5)² - (2x - 5)²
First, we have to remove the brackets.
⇒ 2x² + 5² - 2x² + 5²
And now, we have to group the like terms together and add them.
⇒ 2x² - 2x² + 5² + 5²
⇒ x² + 50
⇒ x² + 50
∴ Hence, (2x + 5)² - (2x - 5)² is x² + 50
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