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ibrahim kabir

Answers (2)

log1/x+3log2=log32 log1/x+log2^3=log32 log1/x+log8=log32 according to the law of logarithm +will change to * therefore log(1/x*8)=log32 since the base is equal the they will cancel each other in the equation (1/x*8)=32 (8/x)=32 clear bracket and cross
(11+x)(8+x)=208 by expanding you get 11(8+x)+x(8+x)=208 by simplifyig this you get x^2+19x+88=208 bring 88 to the rhs you have x^2+19x=120 factorise you have x=5 or x=-24 since age cant be negative the answer is 5

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