(4√3 - 1) (2 + √3)
= (4√3 x 2) + (4√3 x √3) - (1 x 2) - (1 x √3)
= 8√3 + 12- 2 - √3
= 8√3 - √3 + 10
= 7√3 + 10
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(4√3 - 1) (2 + √3)
= (4√3 x 2) + (4√3 x √3) - (1 x 2) - (1 x √3)
= 8√3 + 12- 2 - √3
= 8√3 - √3 + 10
= 7√3 + 10