Mental Maths 7>Chapter 12 - Algebraic Expressions>Question Bank>Q 41

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7th CBSE

IMPORTANT

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If $a y^{2} + b x$ should be added to $- 6 y ² + 3 x$ to get $- 3 y ² + 5 x$ , then find the value of $(a + b)$ .

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Important Questions on Algebraic Expressions

MEDIUM

7th CBSE

IMPORTANT

Mental Maths 7>Chapter 12 - Algebraic Expressions>Question Bank>Q 42

The base of an isosceles triangle is

y

units and the two equal sides is

x

units. Then what will be the perimeter of the triangle?

MEDIUM

7th CBSE

IMPORTANT

Mental Maths 7>Chapter 12 - Algebraic Expressions>WORKSHEET>Q 1

If sum of

7 x ² - 5 x + 5, - 7 x ² + 5 x - 2

and

8 x ² - 2 x + 1

is of the form

a x^{2} + b x + c

, then find the value of

(a + b + c)

.

HARD

7th CBSE

IMPORTANT

Mental Maths 7>Chapter 12 - Algebraic Expressions>WORKSHEET>Q 2

If the difference of

(- y^{2} - 2 y + 3)

from

(5 y^{2} - 7 y + 2)

is of the form

p y^{2} + q y + r

, then write the value of

p + q + r

.

MEDIUM

7th CBSE

IMPORTANT

Mental Maths 7>Chapter 12 - Algebraic Expressions>WORKSHEET>Q 3

If

(7 x - y) - (- 5 x + 9 y) = m x - n y

, then find the value of

m + n

.

HARD

7th CBSE

IMPORTANT

Mental Maths 7>Chapter 12 - Algebraic Expressions>WORKSHEET>Q 4

Subtract

(3 a - 2 b + c)

from the sum of

(3 a + 4 b + c)

and

(- 4 a - b + c) .

HARD

7th CBSE

IMPORTANT

Mental Maths 7>Chapter 12 - Algebraic Expressions>WORKSHEET>Q 5

If the result of difference of the sum of

(- 7 x + 5 y)

and

(- 5 x - 7 y)

from

- 5

is

a x + b y + c

, then write the value of

a + b + c

.

HARD

7th CBSE

IMPORTANT

Mental Maths 7>Chapter 12 - Algebraic Expressions>WORKSHEET>Q 6

If

A = x + 6, B = x^{2} - x + 2, C = 4 x - 1

and

A - B + C = a x^{2} + b x + c

, write the value of

b

.

HARD

7th CBSE

IMPORTANT

Mental Maths 7>Chapter 12 - Algebraic Expressions>WORKSHEET>Q 7

If the sum of the algebraic expressions

7 x^{2} - 3 x + 8, 8 x - 3

, and

- 5 x^{2} - 2 x + 3

is

a x^{2} + b x + c

, then find the value of

a + b + c

.