Find Perimeter and Area Using Polynomials

Find the area of a rectangle with length (x - 5) and width (3x + 1). The area of a rectangle is length x width.

• 3x²+16x-5

• 3x²-14x+5

• 3x²-14x-5

Tags

CCSS.HSA.APR.A.1

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Perimeter= add all sides together

Tags

CCSS.HSA.APR.A.1

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^{Hint: (Add the two sides together then subtract them from the perimeter)}

^{Perimeter - (sum of two sides)}

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Hint: For a square all 4 sides are congruent.

Find the area of the shaded region:

The area of a rectangle is length x width.

The shaded region is outside - inside rectangle.

• 66x³ + 12x²

• 80x² - 24x

• 66x³ + 40x² + 24x

• 66x³ + 92x² -24x

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The area of a rectangle is length x width.

The shaded region is outside - inside rectangle.

What is the perimeter of the backyard?

Tags

CCSS.HSA.APR.A.1

The perimeter of the
 triangle is 10x+20. Find the length of the missing side

Hint: (Add the two sides together then subtract them from the perimeter)

Perimeter - (sum of two sides)

• 6x+10

• 15x+30

• 5x+10

• 5x-10

Tags

CCSS.8.EE.C.7B