Question # 1

(2y-1)²=

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4y²-4y-1

4y²-4y+1

4y²-2y+1

4y²+2y+1

√81/100

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9/100

91/10

3/10

9/10

Factorization of x² -25 is:

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(x-5)(x+5)

(x+5)(x+5)

(x-5)(x-5)

(5-x)(5+x)

(x-y)²- 25 =

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(x-y-5)(x-y-5)

(x+y+5)(x+y+5)

(x-y-5)(x-y+5)

(x+y-5)(x+y+5)

(11)₁₀=

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(1010)₂

(1011)₂

(1110)₂

(1111)₂

By eliminating "x" from x² = a+c and x² =b, we get:

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a+c=b

a-c=b

a+c=-b

a-c=-b

The sum of all the interior angles of a pentagon is:

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180°

360°

540°

720°

(11100)₂-(1101)₂

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(10)₂

(110)₂

(101)₂

(1111)₂

(√8+√6)(√8-√6)=

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8

6

2

1

By eliminating x form 3x -y =6 and x-y =0 we get:

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y =0

y =1

y = 3

y = 4

(564)₈ + (431)₈

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(1215)₈

(1251)₈

(12115)₈

(2511)₈

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Mathematics 8th Class Urdu Medium Chapter 4 Online Test MCQs With Answers

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