ICSE ICSE Class 8 - CISCE Question Bank Solutions for Mathematics

    A 1
+ 1 B
   B 0 

Separate the constants and variables from the following :

`-7,7+"x",7"x"+"yz",sqrt5,sqrt("xy"),(3"yz")/8,4.5"y"-3"x",`

8 −5, 8 − 5x, 8x −5y × p and 3y²z ÷ 4x

Write the number of the term of the following polynomial.

5x² + 3 x ax

Write the number of the term of the following polynomial.

ax ÷ 4 – 7

Write the number of the term of the following polynomial.

ax – by + y x z

Write the number of the term of the following polynomial.

23 + a x b ÷ 2

Separate monomials, binomials, trinomials and polynomials from the following algebraic expressions :

8 − 3x, xy², 3y² − 5y + 8, 9x − 3x² + 15x³ − 7,
3x × 5y, 3x ÷ 5y, 2y ÷ 7 + 3x − 7 and 4 − ax² + bx + y

In an Isosceles-trapezium, show that the opposite angles are supplementary.

Use the direct method to evaluate the following products:

(x + 8)(x + 3)

Use the direct method to evaluate the following products :
(y + 5)(y – 3)

Use the direct method to evaluate the following products:

(a – 8) (a + 2)

Use the direct method to evaluate the following products :
 (b – 3) (b – 5)

Use the direct method to evaluate the following products :
(3x – 2y) (2x + y)

Use the direct method to evaluate the following products:
(5a + 16) (3a – 7)

Use the direct method to evaluate the following products :
(8 – b) (3 + b)

Use the direct method to evaluate :
(x+1) (x−1)

Use the direct method to evaluate :
(2+a) (2−a)

Use the direct method to evaluate :
(3b−1) (3b+1)

Use the direct method to evaluate :
(4+5x) (4−5x)

Use the direct method to evaluate :
(2a+3) (2a−3)