exam Maths Puzzle Numerical Ability

6(2y+1) 2(5y-7)
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y^2-100 y^2-100

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exam Other Question

8-(2x3-9)=
Please take me step by step on how to solve this.


2 to the 4th power plus 2 cubed - 10 divided by (-1) to the 4th power=
vertical line through (5,7)