exam Maths Puzzle Numerical Ability

Simplifying Square Roots
How to simply these square roots;
1. 25
2. 3 * 7
3. 48/27
4. 300

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exam Other Question

If the line containing the points (-8,m) and (2,1) is parallel to the line containing the points (11,-1) and (7,m+1), what is the value of m? Find each product (y-3)(yt5)=y(y) t y(3) ty(y) ty(5)=y2 t y-3 t y2 t y5= y4 t y2 did I do this problem correctly?