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Solve the following simultaneous equation by using an algebraic method (either substitution or elimination) 2x + 3y=-4 4x-y=11

Factor and solve to find roots x squared -x - 90 =0

Scenario: 2 storage sheds are to have the same area. 1 is square and the other is rectangular. the rectangular shed is 4 meters wide and 9 meters long question: how large is one side of the square shed in meters?