exam Maths Puzzle Numerical Ability

Need the area of this right trapezoid:
4z + y -2
3 - x
5z +12
4 + y +2

HELP
THANKS

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exam Other Question
Solve for x:
logbase5 (sqrt2x^2-3)=3/2 Simplify the cube root of (x^2-8x+16)^9