Let u = < -5, 1> , v = < 7, -4> . find 9u-6v. a. < 18, 18> b. < -87, 33> c. < -36, -18> d. < -3, -15>

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Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. 4x^2 + 20x + 25 = 0

Evaluate the function , when d = {9, 15, 30}. r = {5, 7, 12} r = {6, 10, 15} r = {6, 10, 20} r = {5, 12, 20}