ICSE ICSE Class 6 - CISCE Question Bank Solutions for Mathematics

If x = 3, y = 2 and z = 1; find the value of 2x – 3y + 4z + 5

If x = 3, y = 2 and z = 1; find the value of y² – x² + 6z²

If x = 3, y = 2 and z = 1; find the value of xy + y²z – 4zx

If P = − 12x² – 10xy + 5y², Q = 7x² + 6xy + 2y², and R = 5x² + 2xy + 4y² ; find P – Q

If P = − 12x² – 10xy + 5y², Q = 7x² + 6xy + 2y², and R = 5x² + 2xy + 4y² ; find Q + P

If P = − 12x² – 10xy + 5y², Q = 7x² + 6xy + 2y², and R = 5x² + 2xy + 4y² ; find P – Q + R

If P = − 12x² – 10xy + 5y², Q = 7x² + 6xy + 2y², and R = 5x² + 2xy + 4y² ; find P + Q + R

If x = a² – bc, y = b² – ca, and z = c² – ab; find the value of ax + by + cz

If x = a² – bc, y = b² – ca, and z = c² – ab; find the value of ay – bx + cz

Multiply and then evaluate:

(4x + y) and (x – 2y); when x = 2 and y = 1.

Multiply and then evaluate:

(x² – y) and (xy – y²); when x = 1 and y = 2.

Multiply and then evaluate:

(x – 2y + z) and (x – 3z); when x = − 2, y = − 1 and z = 1.

Simplify:

5 (x + 3y) – 2 (3x – 4y)

Simplify:

3x – 8 (5x – 10)

Simplify:

6 {3x – 8 (5x – 10)}

Simplify:

3x – 6 {3x – 8 (5x – 10)}

Simplify:

2 (3x² – 4x – 8) – (3 – 5x – 2x²)

Simplify:

`8"x"−(3"x"−overline(2"x"-3))`

Simplify:

`12"x"^2-(7"x"-overline(3"x"^2+15))`

If x = − 3, find the value of 2x³ + 8x² – 15.