exam Maths Puzzle Numerical Ability

find the zeroes of the function algebracilly. use any method.
F(x)=2x to the 2 power +11x+3

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y^2=5/7y+3/7 Does it have 2 non-real solutions, 2 real solutions, or 1 real solutions.

Thank you. explain why a pentagon cannot exist with the following interior angles: one interior angle measures 100 degrees and each additional interior angle measures 15 degress more than the