Plzz help 12th qustion only..
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here is ur answer I hope it help
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SaiSkandhaaKrishna:
see and comment or thank
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adding two eqns...
ax+bx+by+ay = a^2 - b^2
x(a+b) + y(a+b) = (a+b) (a-b)
(x+y)(a+b) = (a+b) (a-b)
x+y = a-b
ax+bx+by+ay = a^2 - b^2
x(a+b) + y(a+b) = (a+b) (a-b)
(x+y)(a+b) = (a+b) (a-b)
x+y = a-b
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