5x²-12x-9=0, when (i) x belongs to I and (ii) x belongs to Q. solve by quadratic equations.
and explain step by step.
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Answer:
x=3 or x=-3/5
Step-by-step explanation:
5x^2-12x-9=0
5x^2-15x+3x-9=0
5x(x-3)+3(x-3)=0
(5x+3)(x-3)=0
x=-3/5 or x=3
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