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Answered by Ihar D. Maths tutor

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(https://qualifications.pearson.com/content/dam/pdf/A-Level/Mathematics/2013/Exam-materials/6666_01_que_20160624.pdf) Question 6.(i)


How do i solve two linear simultaneous equations 2x+y=7 & 3x-y=8 ?


Solve 5x/(2x+1) - 3/(x+1) = 1


(a) Express (1+4*sqrt(7))/(5+2*sqrt(7)) in the form a+b*sqrt(7), where a and b are integers. (b) Then solve the equation x*(9*sqrt(5)-2*sqrt(45))=sqrt(80).


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