CBSE Class 8 Maths Factorisation Quiz 5

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CBSE / Class 8 / Maths / Factorisation

1.

The factorisation 1 + 16x + 64x² is
(1 - 8x)²
(1 + 8x)²
(8 - x)²
(8 + x)²

2.

The factorisation x² + x + $\frac{1}{4}$ is
( $\frac{x}{2}$ - 1)²
( $\frac{x}{2}$ + 1)²
(x + $\frac{1}{2}$ )²
(x - $\frac{1}{2}$ )²

3.

The value of 99² is
(90)² + 2(90)(9) + (9)²
(90)² - 2(90)(9) + (9)²
(90)² + (9)²
none of these

4.

The value of 49² is
(50)² - 2(50)(1) + (1)²
(50)² + 2 (50) (1) + (1)²
(50)² - (1)²
(50)² + (1)²

5.

The factorisation of ( $\frac{x^2}{y^2}$ -2+ $\frac{y^2}{x^2}$ ) x ≠ 0, y ≠ 0 is
( $\frac{x}{y}$ + $\frac{y}{x}$ )²
( $\frac{x}{y}$ - $\frac{y}{x}$ )²
( $\frac{x}{y}$ -1)²
( $\frac{x}{y}$ +1)²

6.

The value of $\frac{0.73×0.73×-0.27×0.27}{0.73-0.27}$ is
1
0
0.73
0.27

7.

The factorisation of x² - 9 is
(x - 3)²
(x + 3)²
(x + 3)(x - 3)
none of these

8.

The factorisation of 36x²y² - 1 is
(6xy - 1)(6xy + 1)
(6xy - 1)²
(6xy + 1)²
(6 + xy)²

9.

The value of $\frac{0.564×0.564×-0.436×0.436}{0.564-0.436}$ is
0
1
-1
none of these

10.

The value of (0.68)² - (0.32)² is
-1
0
1
0.36

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