Area: a² + 25ab - 350b². Find an expression for the length and the width. If a= 200ft and b = 10ft , find the actual dimensions of the garden.
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Answer:
L = 550 ft
W = 100 ft
Step-by-step explanation:
- Area = a^2 + 25ab -350b^2 (Factor)
- Area = (a+35b) (a-10b)
- Area = L x W
Length :
- (a+35b) (Substitute the value of a and b)
- (200 + 35(10))
- 550 ft
Width:
- (a - 10b)
- (200 - 10(10))
- 100 ft
- AREA = 550X100 = 55000 ft^2
- Double check: (Subtitute the value of a and b in the Equation a^2 +25ab -350b^2)
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