exam Maths Puzzle Numerical Ability

3x2+10x+5=0
I need this to be simplified as much as possible. Thank You.

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exam Other Question

The length of a rectangle is 4 times the width. The perimeter is 90 cm. Find the width and length. A board 10ft long is cut into two pieces. Thgree times the length of the shorter pice is twice the length of the longer piece. Find the length of each piece.