exam Maths Puzzle Numerical Ability

how can I Solve and graph the solution please help


7(x - 3) ˃5x -14

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exam Other Question

find all roots of the polynomial x3 - x2 +16x -16

possible answers:
1, 4, -4
-1, 4, -4
-1, 4i, -4i
1, 4i, -4i

what does the i come from? please explain equation and solution.Thank you
I totally 4 got how 2 do this.....

Simplify

10y to the -3rd power times 3y to the 2nd power