Need answers to both. Preferably 2!

#2

#4

2. -1.4

3. 21i

Step-by-step explanation:

Question 2 Steps:

(-)

Remove parenthesis: (-a) = -a

= -

= 1.4

= -1.4

Question 4 Steps:

Apply radical rule: =

=

=

Apply imaginary number rule: = i

=21

= 21i

I hope this helps you in any shape or form.

answer: give more info

step-by-step explanation:

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,