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Question

−1[a−3{b−4(a−¯¯¯¯¯¯¯¯¯¯¯¯b−8)+4a}+10] equals


A

a+15b+106

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B

a+15b106

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C

a15b106

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D

a+15b106

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Solution

The correct option is B

a+15b106


1[a3{b4(a¯¯¯¯¯¯¯¯¯¯¯¯b8)+4a}+10]

= 1[a3{b4(ab+8)+4a}+10]

= 1[a3{b4a+4b32+4a}+10]

= 1[a3{5b32}+10]

= 1[a15b+96+10]

= 1[a15b+106]

= a+15b106


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