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vazorg [7]
3 years ago
13

A^4 + 3a² - ( 5a - 3)(-7a) Please show work!!

Mathematics
1 answer:
cupoosta [38]3 years ago
7 0

a^4+3a^2-(5a-3)(-7a)\ \ \ \ |\text{use distributive property}\\\\=a^4+3a^2-[(5a)(-7a)+(-3)(-7a)]\\\\=a^4+3a^2-(-35a^2+21a)\\\\=a^4+3a^2+35a^2-21a\\\\=a^4+38a^2-21a

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