– (5 – 7) x - 3x = 6 (- 4 + 2)
differentiate kxe^(-x)
2 ^3x = 9
80-(x-2)/3=76
3x+2 (4x-5)
2 + x =556
find x
grafica la function mixta
y= x²-2x-3
y=x+1