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It assesses knowledge in subjects relevant to the candidate’s chosen course of study.","tags","utme jamb joint admission matriculation board unified tertiary matriculation examination nigeria africa","version","vip","location",{"_390":391,"_392":393},"type","Point","coordinates",[394,395],9.082,10.3671,"ng","priority",19,"createdOn",1755987353430,"updatedOn","questionsCount",29915,"courseCount",20,"examKey","questionData",{"_369":409,"_410":411,"_412":413,"_278":415,"_416":417,"_263":370,"_418":419,"_420":421,"_110":426},"QaFXfBJh15yRjUVmy76qoEQ5F8GVrO","q","Solve for x and y in the equations below
\nx² - y² = 4
\nx + y = 2","ans",[414],2,"2012","course","mathematics","exp","x² - y² = 4 .... (1)
\nx + y = 2 .... (2)
\n
\nSimplify eqn (1)
\n
\n(x + y)(x - y) = 4
\n
\nFrom eqn (2)
\nx + y = 2 so substitute it into simplified eqn (1), we have
\n
\n2 (x - y) = 4
\n
\ntherefore,
\nx - y = 2 ... (1)
\nx + y = 2
\n---------
\n2x = 4
\n---------
\n
\nx = 2, when y = 0","opts",[422,423,424,425],"x = 0, y = -2","x = 0, y = 2","x = 2, y = 0","x = -2, y = 0",12,"12","initComment","initReply","actionData","errors"]

JAMB - Mathematics (2012 - No. 12)

Explanation

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