[(49/1800)]
F(x) = x/|x|
Solve the inequality: 2x - 5 > 3 and x + 2 ≤ 7
construct a circle with a radius of 4cm
1.06 * 1.06
2+5*4-8÷⅘ =
(-10) x 2 - 49
x²+10^-5x-10^-12
[(0.1/20)+2*(1/90)]
how to solve 3+2+8÷4 (4-2)
