2*(-2^3)*2^2
-3*-2
solve given equation to quadratic form using suitable substitution
(x+1)^2+3÷(x+1)^2=4
5/x = 1.5/cos(x)
2^2–3
-2*2^2
(2.3cosx)/(2.3sinx+0.20)=(3200cos(22.5))/(3200sin(22.5)+140)
subtraction pyramid