exam Maths Puzzle Numerical Ability

I have a question. I am supposed to find the GCF of each product.

(6y^2 - 3y) (y + 7)

I got 3y (3y + 7) when I worked it out but I am not showing a GCF could you please help me with this problem? Thanks

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exam Other Question

I would appreciate any help with this problem.

Solve by completing the square
4x^2+2x-3=0
Graph the solution set to each compound inequality

8.1 #32

x > 3 or x < -3