Simplify: 2m − (3m + 2n − 6n)

Simplify:

2m − (3m + 2n − 6n)

Sum

2m − (3m + 2n − 6n)

= 2m − 3m − 2n + 6n

= − m + 4n

= 4n − m

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Fill in the blank, when:
x = 3, y = 6, z = 18, a = 2, b = 8, c = 32 and d = 0.

z ÷ x = ..................

Fill in the blank, when:
x = 3, y = 6, z = 18, a = 2, b = 8, c = 32 and d = 0.

xz + cd = ...................

If a = 3, b = 0, c = 2 and d = 1, find the value of 2a² − 3b² + 4c² − 5d²

Find the value of 5x² – 3x + 2, when x = 2.

State true and false:

`(2"x"-4)/("x"+1)` = − 1, when x = 1

Simplify:

6a² + (2a² − a²) − (a² − b²)

If x = 3, y = 2 and z = 1; find the value of x^y

If x = 3, y = 2 and z = 1; find the value of 3x² − 5y²

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

Simplify:

2 (3x² – 4x – 8) – (3 – 5x – 2x²)