exam Maths Puzzle Numerical Ability

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)

Read Solution (Total 0)

exam Other Question

Please help me solve this equation: log2((x^2)+7)=4 (the first 2 is supposed to be small and at the bottom) 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.