Sggs Maths 9

Simplify the following : $4xy+3x^2-5xy-4y^2+x^2-3y^2$  

•  $9xy+2x^2-4y^2$  

•  $4x^2-xy-7y^2$  

•  $9xy-x^2+4y$  

•  $x^2+5xy$  

Simplify : $2x-x\left(x+y\right)=$  

•  $x^2+xy$  

•  $2x-x^2-xy$  

•  $x^2-xy$  

•  $2x-x^2+xy$  

simplify: $\frac{1}{x}\div\frac{1}{y}\div\frac{1}{z}$  

•  $\frac{y}{xy}$  

•  $\frac{1}{xyz}$  

•  $\frac{yz}{x}$  

•  $\frac{xz}{y}$  

 $\left(3x^3-1\right)^2=$  

•  $6x^2+1$  

•  $9x^6-1$  

•  $9x^6-3x^3+1$  

•  $9x^6-6x^3+1$  

simplify :  $\left(1-4x\right)\left(1+4x\right)$  

•  $1-16x^2$  

•  $16x^2-1$  

•  $1$  

•  $-8x$  

Simplify:  $\left(2x-5\right)\left(x-3\right)-\left(x+2\right)^0-\left(x-2\right)^2$  

•  $2x^2+3x+3$  

•  $2x^2-5x-6x+15$  

•  $-x^2+4x-4$  

•  $x^2-7x+10$  

Given : $3x^2y-2x^3y+5xy^2-6$  
How many terms are there in this expression?

• 6

• 5

• 4

• 3

Given :  $3x^2y-2x^3y\ +5xy^2-6$  
Identify the coefficient of  $xy^2$  

• -6

• 5

• -5

• -2

Given:  $3x^2y-2x^3y+5xy^2-6$  Calculate the value of the expression if  $x=-1\ and\ y=2$  

• 12

• 20

• -16

• 15

Angles which add up to $90\degree$  are called?

• Complementary

• Supplementary

• Acute

• Co-interior