Mathematics
01.01.2021 06:32
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In steps explain how to work 100x^2+180x+81
In steps explain how to work 100x^2+180x+81
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william03300
5,0(35 marks)
100x² + 180x + 81
100x² + 90x + 90x + 81
(10x + 9)(10x + 9)
or
100x² + 180x + 81 = 0
x = -180 +/- √(180² - 4(100)(81))
2(100)
x = -180 +/- √(32400 - 32400)
200
x = -180 +/- √(0)
200
x = -180 +/- 0
200
x = -180
200
x = -9/10
100x² + 90x + 90x + 81
(10x + 9)(10x + 9)
or
100x² + 180x + 81 = 0
x = -180 +/- √(180² - 4(100)(81))
2(100)
x = -180 +/- √(32400 - 32400)
200
x = -180 +/- √(0)
200
x = -180 +/- 0
200
x = -180
200
x = -9/10
eithzyd1648
4,4(21 marks)
2x and 7y, because they have different variables.
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