Find the sum or type
"impossible”
[1 -2 1] + [4 -5 -6] ]
[[?]
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What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0

Solve each quadratic equation by factoring and using the zero product property. x^2 + 18x = 9x