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Romashka [77]
3 years ago
13

(2x+5) ^3 in standard form

Mathematics
1 answer:
ludmilkaskok [199]3 years ago
3 0

Answer:

8x^3+60x^2+150x+125

Step-by-step explanation:

(2x+5)^3=(2x+5)(2x+5)^2 =

(2x+5)(4x^2 +2*2x*5+25)=

(2x+5)(4x^2 +20x+25)=

(2x*4x^2 +2x*20x+2x*25+5*4x^2+5*20x+5*25)=

8x^3+40x^2+50x+20x^2 +100x+125=

8x^3+60x^2+150x+125

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