A = 3(4* + 7 ) + 4(2*-9)
B= 7* (2*-5) - *(2*-5)
C = (2* + 5) (3*+7)
D = (2*-5)(3*-2)

H = (*+5)²
I= (4*+6)²
J= (*-5)²
K = (3*-7)²
L= (y+3)(y-3)
M = (2*+5)(2*-5)