amandasantiago2001
18.12.2020 •
Mathematics
How to factor
49y^{2}-9x^{2}
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Ответ:
(7y + 3x)(7y - 3x)
Step-by-step explanation:
a² - b² = (a + b)(a - b)
49y² - 9x² = (7y)² - (3x)² {a = 7y ; b - 3x}
= (7y + 3x)(7y - 3x)
Ответ:
glizzy drippier
Step-by-step explanation: