1)
#include <stdio.h>
#include <math.h>
int main() {
    float y = 2, t = 5 / (1 + y * y), z = 4;
    float x = 2 * 2 + 3 * sinh(t) - z;
    printf("%.2f\n", x);
}
-------------------------------
2)
#include <stdio.h>
#include <math.h>
int main() {
	float t = 0.5, z = 6, y = t + 2 * (1 / tan(z));
	float x = 3 * pow(y,2) / (4 * tan(z) - 2 * pow(t,2));
	printf("%.2f", x);
}
--------------------------------
3)
#include <stdio.h>
#include <math.h>
int main() {
	float t = 1, z = 3, y = sin(t);
	float x = 4 * pow(y, 2) / (4 * y * exp(z) - 2 * pow(t, 3));
	printf("%.2f", x);
}
------------------------------
4)
#include <stdio.h>
#include <math.h>
int main() {
	float t = 2, z = 3, y = cos(t + z);
	float x = 4 * log(pow(y, 3)) - z / t;
	printf("%.2f", x);
}
------------------------------
5)
#include <stdio.h>
#include <math.h>
int main() {
	float y = 2, z = 4, t = sin(2 + z);
	float x = 6 * pow(t, 2) - ((1 / tan(z)) + 1) / pow(y, 2);
	printf("%.4f", x);
}
------------------------------
6)
#include <stdio.h>
#include <math.h>
int main() {
	float z = 1, t = 2, y = tan(t) + z;
	float x = (8 * pow(z, 2) + 1) / (y * exp(t) + pow(t, 2));
	printf("%.2f", x);
}