Pls Answer 1. Show that (a+bi)^2 = (a+b)(a−b) + 2abi

2. Show that (2x+i)(2x−i) = 4x2 +1

3. Show that (1+i)2 = 2i

You and a friend went to the movies.you spent half your money on tickets. then you spent 1/4 of the money on popcorn, $2 on candy, and $3 on a soda. if you have $1 left, hiw much money did u take to the movies?

Which graph has figures that can undergo a similarity transformation to justify that they are similar? (obviously not the third one)

Solve for x in the equation x2 - 12x + 36 = 90. x= 6+3x/10 x=6+2/7 x= 12+3/22 x = 12+3/10