Mathematics, 10.03.2021 19:40, DASASDAEDWEDA

A bedroom is initially square-shaped with each side x feet long. The room is then expanded so that the length of the room is increased by 3 feet, and the width increased by 4 feet. Choose the expression which represents how much bigger the area of the new bedroom is than the old bedroom. 7x+12
x2+7x+12
x2+12x+7
x+7

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A bedroom is initially square-shaped with each side x feet long. The room is then expanded so that t...