6x = 2x square - 4x -3x+ 6
(n(1) + n(0)) * 20.65625
sen x = 1.121
((5χ/3)! * (χ/3)!)/((4χ/3)! * (2χ/3)!)
((5χ/3)! * (χ/3)!)/((4χ/3) * (2χ/3)!)
8x-11y-7x+7y
what is 9c to the power of 8 squared in a bracket
the solution of simultaneous equations x+2y=8 , x-iy=3
4$(2a-1)^{2}$ -36$(a-3)^{2}$
solve the system of equations by elimination
-7x+y=-19
-2x+3y=-19
