If sum of the squares of zeroes of the polynomial x²+9x+3k is 21.. | rrb ntpc maths solutions

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If sum of the squares of zeroes of the polynomial x²+9x+3k is 21.. | rrb ntpc maths solutions

If sum of the squares of zeroes of the polynomial x²+9x+3k is 21.. | rrb ntpc maths solutions