i need help pleaseeee!

Question

given v=-2i+j and w=4i-3j find ||v-w|| please!

Answer 1

v = -2i + j

w = 4i - 3j

 

v - w = (-2i + j) - (4i - 3j) = -6i + 4j

 

| -6i + 4j | = sqrt ( (-6)^2 + 4^2 ) = sqrt (36 + 16) = sqrt(52) = 2*sqrt(13)