Addition of Brackets

Q.

When any part of an expression is inserted within a pair of brackets with a negative sign before it, the sign of each term inside the brackets remains unchanged.

1. True

2. False

Q.

$4yz(z^2+6z-16)÷2y(z+8)=\text{\_\_}$

1. z-2

2. z(z-2)

3. 2z(z-2)

4. None of these

Q.

$a-3b$ = $-$( ___ )

Q.

'mn + m - n' can be written as

1. mn-(m-n)

2. mn+(m+n)

3. mn-(-m-n)

4. mn-(-m+n)

Q. Which one of the following pairs of expression are equal?

1. 3 + 6, 2(2 + 3)
2. 5 + 10, 3(2 + 3)
3. 4 + 4, 2(1 + 4)
4. 3(1 + 5), 3 + 9

Q.

$xy+2yz-3xz=2yz-$( ___)

Q.

$a^2-b^2+z^2+8x-4y$ = $a^2-\left(x\right)$. Then $x$ equals

1. $b^2+z^2-8x+4y$

2. $-b^2+z^2+8x-4y$

3. $b^2+z^2-8x-4y$

4. $b^2-z^2-8x+4y$

Q. $4yz(z^2+6z-16)÷2y(z+8)=$

1. $z-2$
2. $z(z-2)$
3. $2z(z-2)$

Q. The following list contain some alegbraic expressions and equations:
1. 9x + 2 = 11
2. 3x +7 = 0
3. 2x - 1

Out of them, will be an expression.

1. 9x + 2 = 11
2. 2x - 1
3. 3x + 7 = 0

Q. Which one of the following pairs of expression are equal?

1. 3 + 6, 2(2 + 3)
2. 5 + 10, 3(2 + 3)
3. 4 + 4, 2(1 + 4)
4. 3(1 + 5), 3 + 9

Q.

Simplify: $-m+n-\left[2m-\left\{m-3\left(m+n\right)-\left(2m-n\right)\right\}\right]$