Question

raiz quadrada de 10-2x=7-3x

Answer 1

√10-2x=7-3x (²)
I10-2xI = (7-3x)²
10-2x=49-42x+9x²
9x²-40x+39=0
x=40+-[√40²-4*9*(39)]/2*9
x=40+-√1600-1404/18
x=40+-√196/18
x=40+-14/18
x'=40+14/18=54/18=3
x''=40-14/18=26/18=13/9