Unit 8: Right Triangles & Trigonometry, Homework 8: Law of Cosines. I don't understand how to write out the work. Help would be lovely :))​

A(1,1) b(-3,0) c(-4,-1) d(3,-2) drag it to correct position

Factor the polynomial by its greatest common monomial factor.

Right ∆abc has coordinates a(-7, 3), b( -7, 10), and c(-1, 3). the triangle is reflected over the x - axis and then reflected again over the y - axis to create ∆a'b'c'. which are the coordinates of vertex a'?