Simplification of an Expression

Q.

On simplification of $m-(n-\overline{n-m})$, we get,

1. $-m$

2. $0$

3. $n$

4. $m$

Q.

On simplification of $x-[x-\overline{y+x}-\{x-(x-\overline{y-x})\left\}\right]$, we get,

1. $2y-x$

2. $2y+x$

3. $2y$

4. $2x$

Q.

On simplification of $3\{x-2(y-\overline{x-2y}\left)\right\}$, we get,

1. $9x+18y$

2. $9x-18y$

3. $3x-6y$

4. $3x+6y$

Q.

$3a-[4a-\overline{3a-5b}-3${$2a-(3a-\overline{2a-3b})$}$]$ equals

1. $-a-14b$

2. $5a-14b$

3. $5a+14b$

4. $-a+14b$

Q.

a-{c+(b-c)} = _____.

1. a-b-2c

2. a+b-2c

3. a-b

4. a+b

Q.

Simplify : $37x-[5x+\{28x-(19x-7x)\left\}\right]$

1. $-16x$

2. $14x$

3. $16x$

4. $-14x$

Q.

$-2(1-m^2)-4\{m^2-(2-m^2\left)\right\}$=______.

1. $6m^2+6$

2. $-6m^2-6$

3. $6m^2+6$

4. $-6m^2+6$

Q.

When we factorise $y^2+xy+yz+xz$, one of the factor is _____________

1. 1/2(x²+2x+3)

2. 1/2

3. (x²+2x+3)

4. 1

Q.

Simplify: $39x–[23x–\{29x–(17x–3x)\left\}\right]$

1. $29x$

2. $33x$

3. $30x$

4. $31x$

Q.

Simplify :
${(a-b)}^2+4ab$

1. $a^2$ - $b^2$

2. $a^2$ + $b^2$

3. $a^2-b^2+4ab$

4. ${(a+b)}^2$