Algebraic Expressions

Adding 2x + 3y to 4y + 3x gives

• 5x + 6y

• 5x + 7y

• 5x + 8y

• 5x + 4y

Simplifying the following: x + 7 - 3x - 8

• -2x - 2

• -x - 7

• -2x - 1

• -2x - 3

Simplifying

 $2x\ \times-4y^{2\ }$  

•  $8y^2$  

•  $-8y^2$  

•  $8xy^2$  

•  $-8xy^2$  

Simplifying

 $\left(-3x\right)^{2\ }y\left(x\right)^3$  gives

•  $9x^4y$  

•  $-9x^4y$  

•  $9x^5y$  

•  $-9x^6y$  

Simplify 3x(y + 5) gives

• 3xy + 15

• 3xy + 15y

• 3xy + 15x

• 3yx + 15

Simplifying 9 ( 11 - 2d) gives

• 99 - 22 d

• 109 - 33d

• 99 + 18d

• 99 - 18d

Simplifying 5m(m - 3n)

• $5m^{2\ }\ -\ 15n^2$

• $5m^{2\ }\ -\ 15mn$

• $5m^{2\ }\ +\ 15mn$

• $5m^{2\ }\ +\ 15n^2$

-5x(x - 9) on simplification gives

• $5x^2\ -\ 45$

• $5x^2\ +\ 45$

• $-5x^2\ +\ 45$

• $-5x^2\ +\ 45$

Simplification of

 $x^{3\ }\ -\ x\left(2x\ -\ 5\right)\ +\ 2x^2\ gives$  

•  $x^{3\ }\ +\ 2x^2\$  

•  $x^{3\ }\ -\ 5x$  

•  $x^{3\ }\ -\ 4x$  

•  $x^{3\ }\ +5x$  

Expansion of (2x + 5)(3x -4) gives

• $6x^{2\ }+10x\ +\ 20$

• $6x^{2\ }+7x\ +\ 20$

• $6x^{2\ }-7x\ +\ 20$

• $6x^{2\ }+7x\ -\ 20$