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class9(BRAMDIK EXAM)maths

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Mathematics

9th Grade

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class9(BRAMDIK EXAM)maths
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25 questions

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1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 what is the value of (15y)0?what\ is\ the\ value\ of\ \left(15y\right)^0?  

 ∞\infty  

 ∝\propto  

 00  

 11  

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 what is the formula of a3+b3?what\ is\ the\ formula\ of\ a^3+b^3?  

 (a+b)3\left(a+b\right)^3  

 a3+3ab+b3a^3+3ab+b^3  

 (a+b)(a2−ab+b2)\left(a+b\right)\left(a^2-ab+b^2\right)  

 (a−b)(a2+ab+b2)\left(a-b\right)\left(a^2+ab+b^2\right)  

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 what is the factorize of x4+x2y2+y4?what\ is\ the\ factorize\ of\ x^4+x^2y^2+y^4?  

 (x2+xy+y2)2\left(x^2+xy+y^2\right)^2  

 (x2+xy+y2)(x2−xy+y2)\left(x^2+xy+y^2\right)\left(x^2-xy+y^2\right)  

 (x2−xy−y2)2\left(x^2-xy-y^2\right)^2  

 (x2−xy−y2)(x2+xy+y2)\left(x^2-xy-y^2\right)\left(x^2+xy+y^2\right)  

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 what is the formula of a2−b2?what\ is\ the\ formula\ of\ a^2-b^2?  

 (a−b)2\left(a-b\right)^2  

 (a+b)(a−b)\left(a+b\right)\left(a-b\right)  

 a2−2ab+b2a^2-2ab+b^2  

 a2−2ab−b2a^2-2ab-b^2  

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 what is the factorize of x2−25y2?what\ is\ the\ factorize\ of\ x^2-25y^2?  

 (x+5y)(x−5y)\left(x+5y\right)\left(x-5y\right)  

 (x−5y)2\left(x-5y\right)^2  

 (x−5y)(x−5y)\left(x-5y\right)\left(x-5y\right)  

 (x+5y)2\left(x+5y\right)^2  

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 what is the factorize of 3x+3y?what\ is\ the\ factorize\ of\ 3x+3y?  

 3×x+3×y3\times x+3\times y  

 3(x+y)3\left(x+y\right)  

 3(x−y)3\left(x-y\right)  

 6xy6xy  

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 If x−1x=3,what is the value of (x−1x)2?If\ x-\frac{1}{x}=3,what\ is\ the\ value\ of\ \left(x-\frac{1}{x}\right)^2?  

 66  

 33  

 99  

 −9-9  

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