solve the equation 27x^3+42x^2+28x-8=0 are the given roots are in g.p
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Answer:
x=-2
Step-by-step explanation:
27x³+42x²+28x-8=0
Put x=-2
27(-2)³+42(-2)²+28(-2)-8=0
27(-8)+42(4)+28(-2)+8=0
-216+168+56-8=0
-216+216=0
0=0
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