Mathematics for Class 8>Chapter 6 - Algebraic Expressions and Identities>EXERCISE>Q 20

EASY

8th CBSE

IMPORTANT

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Simplify:
$a (b - c) + b (c - a) + c (a - b)$

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Important Questions on Algebraic Expressions and Identities

MEDIUM

8th CBSE

IMPORTANT

Mathematics for Class 8>Chapter 6 - Algebraic Expressions and Identities>EXERCISE>Q 20

After simplifying

4 a b (a - b) - 6 a^{2} (b - b^{2}) - 3 b^{2} (2 a^{2} - a) + 2 a b (b - a)

if we get

- k a^{2} b + a b^{2}

, then find the value of

k

.

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8th CBSE

IMPORTANT

Mathematics for Class 8>Chapter 6 - Algebraic Expressions and Identities>EXERCISE>Q 20

After simplifying

x^{2} (x^{2} + 1) - x^{3} (x + 1) - x (x^{3} - x)

we get

- x^{4} + k x^{2} - x^{3}

, then find the value of

k

.

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8th CBSE

IMPORTANT

Mathematics for Class 8>Chapter 6 - Algebraic Expressions and Identities>EXERCISE>Q 20

After simplifying

2 a^{2} + 3 a (1 - 2 a^{3}) + a (a + 1)

we get

- k a^{4} + 3 a^{2} + 4 a

, then find the value of

k

.

EASY

8th CBSE

IMPORTANT

Mathematics for Class 8>Chapter 6 - Algebraic Expressions and Identities>EXERCISE>Q 20

After Simplifying

a^{2} (2 a - 1) + 3 a + a^{3} - 8

if we get,

k a^{3} - a^{2} + 3 a - 8

, then find the value of

k

.

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8th CBSE

IMPORTANT

Mathematics for Class 8>Chapter 6 - Algebraic Expressions and Identities>EXERCISE>Q 20

After simplifying

\frac{3}{2} x^{2} (x^{2} - 1) + \frac{1}{4} x^{2} (x^{2} + x) - \frac{3}{4} x (x^{3} - 1)

we get

x^{4} + \frac{1}{4} x^{3} - \frac{3}{2} x^{2} + \frac{k}{4} x

, then find the value of

k

.

MEDIUM

8th CBSE

IMPORTANT

Mathematics for Class 8>Chapter 6 - Algebraic Expressions and Identities>EXERCISE>Q 20

After simplifying

a^{2} b (a - b^{2}) + a b^{2} (4 a b - 2 a^{2}) - a^{3} b (1 - 2 b)

we get

3 a^{k} b^{3}

, then find the value of

k

.

MEDIUM

8th CBSE

IMPORTANT

Mathematics for Class 8>Chapter 6 - Algebraic Expressions and Identities>EXERCISE>Q 20

Simplify

a^{2} b (a^{3} - a + 1) - a b (a^{4} - 2 a^{2} + 2 a) - b (a^{3} - a^{2} - 1)

EASY

8th CBSE

IMPORTANT

Mathematics for Class 8>Chapter 6 - Algebraic Expressions and Identities>EXERCISE>Q 1

After Multiplying:

$(5 x + 3)$ by $(7 x +2)$ if we get, $35 x^{2} + k x + 6$ , then find the value of $k$ .