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13-11-2019
Mathematics

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what is x ?(2x + 5) (x² +5x+1)

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13-11-2019

Answer:

(2x + 5) (x² +5x+1)

Step-by-step explanation:

(2x+5)(x2+5x+1)

=(2x+5)(x2+5x+1)

=(2x)(x2)+(2x)(5x)+(2x)(1)+(5)(x2)+(5)(5x)+(5)(1)

=2x3+10x2+2x+5x2+25x+5

=2x3+15x2+27x+5

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