# Question #f4b5b

##### 1 Answer

Jan 9, 2017

#2v-4u=((-24),(0))#

#### Explanation:

#2v-4u=2((2),(4))-4((7),(2))# Each of the x and y components can be multiplied by the scalar quantity.

#rArrcolor(red)(2)((2),(4))-color(red)(4)((7),(2))#

#=((color(red)(2)xx2),(color(red)(2)xx4))-((color(red)(4)xx7),(color(red)(4)xx2))=((4),(8))-((28),(8))# Similarly, subtract corresponding x and y components.

#rArr((4),(8))-((28),(8))=((4-28),(8-8))=((-24),(0))#