3. What is the area of the rectangle with the width of (2x - 1) and with the length of (4x + 2)?
A. 813-2
B. 8x + 2
C. C. 8x? - 2
D. 8x2 + 2
A. 813-2
B. 8x + 2
C. C. 8x? - 2
D. 8x2 + 2
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Answer:
C. 8x² - 2
Step-by-step explanation:
Let w = 2x - 1 be the width of the rectangle.
Let l = 4x + 2 be the length of the rectangle.
Formula for Area of Rectangle:
A = lw
Solve for A:
A = lw
A = (4x + 2)(2x - 1)
A = (4x)(2x) + (4x)(-1) + (2)(2x) + (2)(-1)
A = 8x² - 4x + 4x - 2
A = 8x² - 2
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