cos
(
𝜋
+
6
𝑥
)
cos(π+6x)
darw a line segment PQ of length 6cm. construct a line perpendicular to PQ passing through a point P.
48-12x-6x²
√8 . √2 + ( - 15 : 5 )2 - {[(− 489)7]0}8 =
7x-2y=15
y+6=2x
XxXxXxXxXxYxYxY
3x-6=9
3y-x=-1
x=y+7
6x-8y-5x+3y =
1/2/3+5/6
