Verified answer

X(X - 1) - 5(x - 2) = 2

x^2-1x-5x+10=2

x^2-6x+8=0

x=(6±√(36-4(1)(8)))/2

x=(6±√(36-32))/2

x=(6±√4)/2

x=(6±2)/2

x1=8/2=4

x2=4/2=2

3z² = 48 ------ 3z^2-48=0

a=3

B=0

C=-48

z=(±√(-4(3)(-48)))/6

z=(±√576)/6

z1=24/6=4

z1=(-24)/6=-4

4x² + 3x = 22

A=4

B=3

C=-22

x=(-3±√(9-4(4)(-22)))/8

x=(-3±√361)/8

x1=(-3+19)/8=2

x2=(-3-19)/8=-2.8