exam Maths Puzzle Numerical Ability

Evaluate the expression, given x = -2, y = 3, and a = -4.
17). -7x + 5y - 9a

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exam Other Question

1.)Solve: ix^2 + 3x -2i =0 by the quadratic formula
2.) √2x^2 + x - √2 =0
3.) Show that 1-5i is a solution of x^2 -2x + 26 = 0 and i is a solution of x^4 - 3x^2 - 4 = Solve

a squared + 2/ b divided by (a + 2/a) =

a. b/a
b. a/b
c. a squared-2/(a+2)b
d. (a squared + 2)squared/ab