Hello Everyone... Just thought to upload a Q&A Video... Pls ask me questions like what is your name, age, favorite food, favorite song, favorite sport etc.
Fastt plz
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Hello Everyone... Just thought to upload a Q&A Video... Pls ask me questions like what is your name, age, favorite food, favorite song, favorite sport etc.
Fastt plz
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Explanation:
★ Answer :
→ Method 1 :
As, we have to factorise the (3a + 5b)² - 4c²
We know that,
(a + b)² = a² + b² + 2ab
→ (3a)² + (5b)² + 2(3a)(5b) - 4c²
→ 9a² + 25b² - 4c² + 30ab
\rule{200}{2}
→ Method 2 :
→ (3a + 5b)² - 4c²
We can write 4c² as (2c)².
→ (3a + 5b)² - (2c)²
We know that,
a² - b² = (a + b)(a - b)
→ (3a + 5b - 2c)(3a + 5b + 2c)
→ 9a² + 15ab - 6ac + 15ab + 25b² - 10bc + 6ac + 10bc - 4c²
→ 9a² + 25b² - 4c² + 30ab
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by the way my self pinky yadav