exam
Maths Puzzle
Numerical Ability
Simplify the expression. Write the reslut using positive exponents only.
5^-7x^-3y^2
____________
5^-4x^-6y^4
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exam Other Question
(X^2 + 2xy +Y^2)-49
A) -4 -3 -4Z = 1
-5 +1Y +2z =-34
5X -1Y = 28
B) 5X +5Y -1z =21
3X -2Y -4Z =48
4X -4Y -1Z =42