exam Maths Puzzle Numerical Ability

The length of a rectangular piece of sheet steel is 2 in longer than the width. Find the exact dimensions if the area of the sheet is 168 sq. in.

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exam Other Question

Can you please help me with this? I have no idea how to work these.

(3x squared - 7x + 5)+(-2x squared + 7x - 8)

(5y squared - 3y + 4)-(3y squared - 7y + 2) If 8exponent x = 1000, then x =