exam Maths Puzzle Numerical Ability

Please find all appropriate critical points and graph (conic)
f(x)= x^2+x-2
Please show work
Thank You

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exam Other Question

Two airplanes depart from an airport traveling in opposite
directions.The second airplane is 200 miles per hour faster than the first. After
2 hours they are 1100 miles apart. Find the speeds of the airplanes. Find the equation of the line through the two points (5,3) and (-7,7).