√12+1/2√48(1-√3)(√3+2)X(10-X)=9

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√12+1/2√48(1-√3)(√3+2)X(10-X)=9
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√12+1/2√48(1-√3)(√3+2)X(10-X)=9
√12+1/2√48
(1-√3)(√3+2)
X(10-X)=9

√12+1/2√48(1-√3)(√3+2)X(10-X)=9
√12+1/2√48
=2√3+1/2×4√3
=2√3+2√3
=4√3
(1-√3)(√3+2)
=√3+2-3-2√3
=-1-√3
X(10-X)=9
10x-x²=9
x²-10x+9=0
(x-1)(x-9)=0
x1=1,x2=9