1.

Simplify : `(15)/(2)xx(4)/(3)[6x^(2)-9x(x-bar(3-2x))]`

Answer» Correct Answer - `28x^(2) - (57)/(2) x`
`(15)/(2)x-(4)/(3)[6x^(2)-9x(x-bar(3-2x))]`
`(15)/(2)x-(4)/(3)[6x^(2)-9x(x-3+2x)]`
`=(15)/(2)x-(4)/(3)[6x^(2)-27x^(2)+27x]`
`=(15)/(2)x-(4)/(3)[6x^(2)-27x^(2)+27x]`
`=(15)/(2)x-(4)/(3)xx21x^(2)-(4)/(3)xx27x`
`(15)/(2)x+28x^(2)-36x=28x^(2)+(15)/(2)x-36x`
`=28x^(2)+((15)/(2)-36)x=28x^(2)+((15-72)/(2))x`
`28x^(2)-(15)/(2)x`


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