exam
Maths Puzzle
Numerical Ability
express as a rational expression:
x^3+y^3+z^3-3xyz/a^3+b^3+c^3-3abc times
a^2+b^2+c^2-ab-bc-ca/x^2+y^2+y^2-xy-yz-zx
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exam Other Question
7(3x + 4) + 8(2x + 5) + 13
1) write log7 49=2 in exponential form.
2) use the change of base formula( property 10.9) to solve for x; x=log3 90
3) solve for x: 9/(4x)+1/3=5/(2x); (x^-1=4/3)