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

Find the value of x, if 4x = (52)² − (48)².

Find the value of x, if 14x = (47)² − (33)².

Find the value of x, if 5x = (50)² − (40)².

If 2x + 3y = 14 and 2x − 3y = 2, find the value of xy.
[Hint: Use (2x + 3y)² − (2x − 3y)² = 24xy]

Find the following product: (x + 4) (x + 7)

Find the following product:  (x − 11) (x + 4)

Find the following product: (x + 7) (x − 5)

Find the following product: (x − 3) ( x − 2)

Find the following product: (y² − 4) (y² − 3)

Find the following product: \[\left( x + \frac{4}{3} \right)\left( x + \frac{3}{4} \right)\]

Find the following product: (3x + 5) (3x + 11)

Find the following product:  (2x² − 3) (2x² + 5)

Find the following product: (z² + 2) (z² − 3)

Find the following product: (3x − 4y) (2x − 4y)

Find the following product:  (3x² − 4xy) (3x² − 3xy)

Find the following product: \[\left( x + \frac{1}{5} \right)(x + 5)\]

Find the following product: \[\left( z + \frac{3}{4} \right)\left( z + \frac{4}{3} \right)\]

Find the following product:  (x² + 4) (x² + 9)

Find the following product: (y² + 12) (y² + 6)

Find the following product: \[\left( y^2 + \frac{5}{7} \right)\left( y^2 - \frac{14}{5} \right)\]