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Verifica polinomi

Authored by Ilaria Farulla

Mathematics

8th - 9th Grade

Used 10+ times

Verifica polinomi
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13 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 (18x5y224x4y3+30x6y4):(6x3y2)=(18x^5y^2–24x^4y^3+30x^6y^4):(–6x^3y^2)=  

 13x2+4xy+5x3y-\frac{1}{3}x^2+4xy+5x^3y  

 3x2+4xy5x3y–3x^2+4xy–5x^3y  

 3x2+15xy25x3y2–3x^2+\frac{1}{5}xy^2–5x^3y2  

 +3x24xy 9 x3y+3x^2-4xy\ –9\ x^3y  

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 (10a3b4 +6a2b8 ): .....................=+5a3b2 3a2b6\left(-10a^3b^4\ +6a^2b^8\ \right):\ _{.....................}=+5a^3b^2\ -3a^2b^6  

 2b2-2b^2  

 +5ab2+5ab^2  

 12a2b-\frac{1}{2}a^2b  

 2b-2b  

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 (14m+n) (14mn)=\left(\frac{1}{4}m+n\right)\ \left(\frac{1}{4}m-n\right)=  

 116m2n2\frac{1}{16}m^2-n^2  

 18m2n2\frac{1}{8}m^2-n^2  

 (14m+n)2\left(\frac{1}{4}m+n\right)^2  

 14m2n2-\frac{1}{4}m^2n^2  

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 (38xy10  x6) (38xy10 + x6)=\left(\frac{3}{8}xy^{10}\ -\ x^6\right)\ \left(\frac{3}{8}xy^{10}\ +\ x^6\right)=  

 98x2y100  x36\frac{9}{8}x^2y^{100}\ -\ x^{36}  

 38x2y20  x12\frac{3}{8}x^2y^{20}\ -\ x^{12}  

 964x2y20  x12\frac{9}{64}x^2y^{20}\ -\ x^{12}  

 964x2y100 + x36\frac{9}{64}x^2y^{100}\ +\ x^{36}  

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 (43b)2=\left(-4-3b\right)^2=  

 1612b+9b216-12b+9b^2  

 16+12b+9b216+12b+9b^2  

 1624b+9b216-24b+9b^2  

 16+24b+9b216+24b+9b^2  

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 (45a3+52bc)2=\left(\frac{4}{5}a^3+\frac{5}{2}bc\right)^2=  

 1625a9 +2a3bc+254b2c2\frac{16}{25}a^9\ +2a^3bc+\frac{25}{4}b^2c^2  

 165a6 +2a3bc+252a3b2c2\frac{16}{5}a^6\ +2a^3bc+\frac{25}{2}a^3b^2c^2  

 1625a6 +4a3bc+254b2c2\frac{16}{25}a^6\ +4a^3bc+\frac{25}{4}b^2c^2  

 1625a3 +4a3bc+254bc\frac{16}{25}a^3\ +4a^3bc+\frac{25}{4}bc  

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 (3ab+2a2c)3=\left(3ab+2a^2c\right)^3=  

 27a3b3+54a4b2c+36a5bc2+8a6c327a^3b^3+54a^4b^2c+36a^5bc^2+8a^6c^3  

 27a3b3+6a3bc+12a4bc2+8a6c327a^3b^3+6a^3bc+12a^4bc^2+8a^6c^3  

 27a3b3+12a3b2c2+36a5bc2+8a9c327a^3b^3+12a^3b^2c^2+36a^5bc^2+8a^9c^3  

 27a3b354a4bc2+36a4bc2+8a6c327a^3b^3-54a^4bc^2+36a^4bc^2+8a^6c^3  

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