3N Maths Chpt 1, 2

Factorise  $5ax+2bx-10ay-4by$ 

•  $5a\left(x-2y\right)2b\left(x-2y\right)$

•  $\left(5a+2b\right)\left(x-2y\right)$ 

•  $\left(5a+2b\right)\left(x+2y\right)$ 

Simplify  $\frac{2}{x+3}-\frac{1}{x+2}$ 

•  $\frac{x-1}{\left(x+3\right)\left(x+2\right)}$ 

•  $\frac{x+1}{\left(x+3\right)\left(x+2\right)}$ 

•  $\frac{x+7}{\left(x+3\right)\left(x+2\right)}$ 

• x = 5 or x = 0.5

• x = -5 or x = 0.5

• x = 5 or x = -0.5

• x = -5 or x = -0.5

 $x^2+6x\ =\$ 

•  $\left(x+3\right)^2-3$ 

•  $\left(x+3\right)^2+3$ 

•  $\left(x+3\right)^2-9$ 

•  $\left(x+3\right)^2+9$ 

• a = 3, b = -14

• a = 3, b = -5

• a = 3, b = 4

• a = 3, b = 9

• a=3, b = 5, c = 4

• a=3, b = -5, c = 4

• a=3, b = 5, c = -4

• a=3, b = -5, c = -4

A bag contains 4 red balls, 3 blue balls and 5 yellow balls. A ball is taken at random from the bag. Find the probability that it is blue.

• 3

If  $c=3d+2e$ , which of the following statements is true?

•  $3d=c-2e$ 

•  $3d=c+2e$ 

•  $3d=2e-c$ 

•  $3d=\ -2e-c$

If  $3d=c-2e$ , which of the following statements is true?

•  $d=\frac{c}{3}-2e$ 

•  $d=c-\frac{2e}{3}$ 

•  $d=\frac{c-2e}{3}$ 

•  $3d=c-2e\div3$