Secondary School (English Medium) (5 to 8) इयत्ता ७ - CBSE Question Bank Solutions for Mathematics

Add: 3p²q² - 4pq + 5, - 10p²q², 15 + 9pq + 7p²q²

Add: ab - 4a, 4b - ab, 4a - 4b

Add: x² - y² - 1 , y² - 1 - x², 1- x² - y²

Subtract: - 5y² from y²

Subtract: 6xy from − 12xy

Subtract: (a - b) from (a + b)

Subtract: a (b - 5) from b (5 - a)

Subtract: -m² + 5mn from 4m² - 3mn + 8

Subtract: -x² + 10x - 5 from 5x - 10

Subtract: 5a² - 7ab + 5b² from 3ab - 2a² -2b²

Subtract: 4pq - 5q² - 3p² from 5p² + 3q² - pq

What should be added to x² + xy + y² to obtain 2x² + 3xy?

What should be subtracted from 2a + 8b + 10 to get - 3a + 7b + 16?

What should be taken away from 3x² - 4y² + 5xy + 20 to obtain - x² - y2 + 6xy + 20?

From the sum of 3x - y + 11 and - y - 11, subtract 3x - y - 11.

From the sum of 4 + 3x and 5 - 4x + 2x², subtract the sum of 3x² - 5x and -x² + 2x + 5.

Name any two figures that have both line symmetry and rotational symmetry.

Draw, wherever possible, a rough sketch of a triangle with both line and rotational symmetries of order more than 1.

Draw, wherever possible, a rough sketch of a triangle with only line symmetry and no rotational symmetry of order more than 1.

Draw, wherever possible, a rough sketch of a quadrilateral with a rotational symmetry of order more than 1 but not a line symmetry.