X^2 - 6x = 0.5x + 42 ... solve for x

Steps please! Thanks in advance!

x^2 - 6x = 0.5x + 42
x^2 - 6.5x - 42 = 0
2x^2-13x - 84 = 0
(2x-21)(x+4) = 0
x = 21/2 or -4
x = 10.5 or -4

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X^2 - 6x = 0.5x + 42
x²-6.5x -42=0
2x²-13-84=0
(2x -21 )(x + 4)=0
2x-21 = 0 or x+4=0
2x=21
x=10.5 or x=-4



84=42*2=2*6*7=2*2*3*7

X^2 - 6x = 0.5x + 42
X^2-6.5x-42=o
2X^2-13x-84=0
(2x-21)(x+4)=0
so X=10.5 &X= -4

KENZIE IM GOING TO EAT YOUR POOTER