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mrs_skeptik [129]
2 years ago
13

SOMEONE PLEASE HELP....

Mathematics
1 answer:
Anton [14]2 years ago
6 0

Answer:

Step-by-step explanation:

(3x+4)(x^2+px+5) \\=3x^3+3px^2+15x+4x^2+4px+20\\=3x^3+(3p+4)x^2+(15+4p)x +20

since we know that x^2  in this expansion is -23x^{2}

thus 3p+4=-23\\3p=-27\\p=-9

Hope that helps!

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hjlf
1 \% =\frac{1}{100} \\ \\25 \% =\frac{25}{100}=0,25\\ \\25 \% \cdot 68000 = 0,25 \cdot 68000 =17 000


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