factorise 6xy + 9yz + 8xt + 12zt
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Ques). 6xy + 9yz + 8xt + 12zt
= 3y(2x + 3z) + 4t(2x + 3z)
= (2x + 3z) (3y + 4t)
= 3y(2x + 3z) + 4t(2x + 3z)
= (2x + 3z) (3y + 4t)
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