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. Solve by cross multiplication method:x+y=a+bax-by=a2-b? |
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Answer» correct answer isx = a, y = b please like and accept as best answer x + y=a+b, ax-by=a^2-b^2. given system of equation x+y-(a+b)=0 , ax-by-(a^2-b^2)=0, a1=1, b1=1, c1=( a+b); a2=a, b2=-b; c2=-( a^2-b^2); X| b1 c1 = y| c1 a1 =1/a1 b1, x=-a( a+b)/-(a+b); x=a; y=-b/(a+b)/ -( a+b); y=b: X=a y=bCorrect answerPlease like and accept answer x=a & y= b is the right answer. |
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