book Maths Puzzle Numerical Ability

x^4 - 3x^2 + 2 = 0

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book Other Question

Write solution as a coordinate. Then graph on the graph provided and label the solution. Label the x and y axis for each problem.

x+3y=-5
2x-3y=8

PLEASE HELP! what is the ratio of the number of nickles in a quarter to the number of quarters in a dollar?(the possibilites are.....5/4, 5/25, 4/5, or none of these)