exam Maths Puzzle Numerical Ability

This question is really troubling me and i could use some help please. Given that “e” is a complex number, solve e + 6ē = 7 (note: ē is the complex conjugate of e)

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exam Other Question

Vlank +blank+blank=30 I need help simplifing this problem.

(x + 3)(2x - 1) (-x - 3 )(2x + 1)
________________ ÷ ____________________

x(x + 4) x

and

x^(2) -