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Feliz [49]
2 years ago
13

5a(2x–a)–(8a–x)(2x–a)

Mathematics
1 answer:
SCORPION-xisa [38]2 years ago
4 0
Remember foil and distributive property
note the invible -1

5a(2x-1)-1(8a-x)(2x-a)
look at first bit
5a(2x-a)=10ax-5a^2
2nd part

-1(8a-x)(2x-a)
-1(16ax-2x^2-8a^2+ax)
-1(17ax-2x^2-8a^2)
-17ax+2x^2+8a^2

now combine the 2 parts
10ax-5a^2-17ax+2x^2+8a^2
2x^2+3a^2-7ax
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