a rectangular lot with an area of 40m² has a length of 31m longer than its width. Which of the ff. is the representation in standard form of the given info.
a. 1²-51-40=0
b. 1²+31-40=0
c 1²-31-40=0
a. 1²-51-40=0
b. 1²+31-40=0
c 1²-31-40=0
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Answers & Comments
Step-by-step explanation:
Area = length × width
40 = (w + 31) w
40 = w² + 31w
w² + 31w -40 = 40 - 40
w² + 31 - 40 = 0
From choices:
Answer is b