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ANEK [815]
3 years ago
8

Solve −3x2 + 30x − 90 = 0. x equals 5 plus or minus 2i square root of 5 x equals 5 plus or minus i square root of 5 x equals 10

plus or minus 2i square root of 5 x equals 10 plus or minus i square root of 5
Mathematics
2 answers:
Tcecarenko [31]3 years ago
5 0
The x in your equation is 16/5 or 3 1/5 or 3.2 if you want it simplified 
aliina [53]3 years ago
5 0

Answer:

x = 5 +/-<em> i</em> √5

(took the test just now)

Hope this helps !

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The length of rectangular field is 7 m less than 4 times the width. The perimeter is 136 m. Find the width and length
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P = 2(L + W)
P = 136
L = 4W - 7

136 = 2(4W - 7 + W)
136 = 2(5W - 7)
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150 = 10W
150/10 = W
15 = W <=== width is 15 m

L = 4W - 7
L = 4(15) - 7
L = 60 - 7
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