A rectangle's sides are extended by 3 m. The new area of the figure is given by the expression: a(x) = $x^{2} + 7 x + 4$ . $x$ is the extension of sides. What is the new area?

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Solution

a(x) = $x^{2} + 7 x + 4$

Substitute $x = 3$

a(3) = $3^{2} + 7 \times 3 + 4$

a(3) = 9 + 21 + 4

a(3) = 34 square meters

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A rectangle's sides are extended by 3 m. The new area of the figure is given by the expression: a(x) = $x^{2} + 7 x + 4$ . $x$ is the extension of sides. What is the new area ?

The extension of sides of the original rectangle is 2. The sides of the original figure are 1 and 7. Area of new figure is 27

A rectangular block has 2 metres, 3 metres and 4 metres as length, width and height respectively. If the sides of the block are extended by the same length 'x 'metres, what will be the algebric expression for the new volume?

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A rectangle's sides are extended by 3 m. The new area of the figure is given by the expression: a(x) = x2+7x+4. x is the extension of sides. What is the new area?

a(x) = x2+7x+4 Substitute x=3 a(3) = 32+7×3+4 a(3) = 9 + 21 + 4 a(3) = 34 square meters

A rectangle's sides are extended by 3 m. The new area of the figure is given by the expression: a(x) = $x^{2} + 7 x + 4$ . $x$ is the extension of sides. What is the new area?

a(x) = $x^{2} + 7 x + 4$

Substitute $x = 3$

a(3) = $3^{2} + 7 \times 3 + 4$

a(3) = 9 + 21 + 4

a(3) = 34 square meters