ADD MATHS 12!

The expression x-2 is a factor of

• $4x^4-2x^2-56$

• $4x^3+2x^2-16$

The expression ab+3c-3b-ac is equal

• (a+3)(c-b)

• (a+3)(b-c)

• (a-3)(b-c)

The roots of the equation  $5x^2+6x-2=0$  are?

• not real and not distinct

• not real and not equal 

• real and ditinct 

• real and equal

The set of values of x for  $5x+10\ge0$  is

•  $x\le-5$  

•  $x\ge-2$  

•  $x\ge5$  

•  $x\le2$  

 $\sqrt{3\times27^m}$  is equal to

•  $3^{n+3m}$  

•  $\sqrt{81^{3m}}$  

•  $3^{\frac{3m+1}{2}}$  

•  $3^{\frac{4m}{2}}$  

 $\frac{2^2}{8^{\frac{1}{3}}}$  simplifies to 

•  $\frac{1}{4}$  

•  $\frac{4}{64}$  

•  $\frac{1}{2}$  

•  $2$  

The nth term of the EVEN integers between 10 and 50 is

• 12

• 26

• 50

• 48

The first 4 terms of a convergent GP is given by 500, 200, 82, 32. The first term of the GP is ?

• 500

• 200

• 82

• 32

Given that  $vector\ OA=\left(-17,-25\right)\ \&\ vector\ OB=\left(4,5\right)$  the vector AB=

• (13,30)

• (21,20)

• (21,30)

If  $f\left(x\right)=3x-4\ \&\ fg\left(x\right)=x$  then g(x) =

•  $\frac{1}{3x-4}$  

•  $\frac{x+4}{3}$  

• 3 - 4x 

• 4x - 3