exam Maths Puzzle Numerical Ability

x + 5 = -6/x

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exam Other Question

solve the system using the linear combination method: 5x+y=6 -5x+3y=-22 Can you help me factorise these questions:-

1. 8a + 12b =
2. x^2 + 5x =
3. 5xy + 15x^2 =
4. 21x^3 - 14 =
5. 18y^2z - 27yz^2 =