solve the sum
m(x- 3y)2+n(3y-x)+5x-15y
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Answered by
33
m(x -3y)² +n(3y -x) +5(x -3y)
=m(x-3y)² -n(x-3y) +5(x -3y)
=(x -3y) {m(x-3y) -n +5}
=>(x -3y){m(x -3y) - n+5} =0
x -3y = 0
x = 3y
and m(x -3y) -n+5 = 0
put x = 3y in above equation,
m(0) -n +5 = 0
hence, n = 5 and m €(-∞, +∞)
=m(x-3y)² -n(x-3y) +5(x -3y)
=(x -3y) {m(x-3y) -n +5}
=>(x -3y){m(x -3y) - n+5} =0
x -3y = 0
x = 3y
and m(x -3y) -n+5 = 0
put x = 3y in above equation,
m(0) -n +5 = 0
hence, n = 5 and m €(-∞, +∞)
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7
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