8(1+sinα)+8(1−sinα)=
x² + y² + 14x - 2y = -1
5A-17B+10C=0
11A-5B-C=280
2A+20B-27C=40
Solve for A,B,C
(A'∩B)'
(A∩B')'
(508 x 12) -(645 x 5)
______________________
98.5 -94.7
f(x)=x-5/x^25
(A∩B')
(A U B')
how to solve 2+4÷2×3