Quiz on Algebra

What is the product of -5xy and 3y

• -18xy

• -2xy

• -15xy²

• -15x²y

Expand -4c(2c-5d)

• -6c²-9cd

• -8c²+20cd

• -8c+20cd

• -6c+9cd

What is the like terms of 3x²y in the expression

x³+2xy-5xy²-4x²y+5+3x²y

• 2xy

• -5xy²

• -4x²y

• 13x²y

write the product of $\frac{-3}{7}x\ and\ \frac{14}{9}y$  

•  $\frac{-3}{9}xy$  

•  $\frac{6}{9}xy$  

•  $\frac{-2}{3}xy$  

• none

If one factor of c² - 4cd - 21d² is (c-7d) Find the other factor

• (c+7d)

• (c-3d)

• (c+3d)

• (c-7)

Expand and simplify (a+2b)(a-2b)

• a²-b²

• a²-4b⁴

• a²+b²

• a²-4b²

factorize x²+3xy+2y²

• (x+1) and (x+2y)

• (x+y) and (x+2y)

• (x+y) and (x-2y)

• (x-y) and (x+2y)

Expand 5x(4+3xy)

• 5xy+15xy

• 20y+15xy

• 5x²+4xy

• 20x+15x²y