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GREYUIT [131]
3 years ago
12

58. Graph the function y=x^2+3x-18. How many real roots does the function have?

Mathematics
1 answer:
Airida [17]3 years ago
8 0

9514 1404 393

Answer:

  58. 2 real roots; see attached for a graph

  59. -6, 3

Step-by-step explanation:

58. A graphing calculator graphs this easily. The graph is shown in the attachment. There are 2 x-intercepts, hence 2 real roots.

__

59. The x-intercepts are (-6, 0) and (3, 0), so the x-values x=-6 and x=3 satisfy the equation y = 0.

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Factor this polynomial completely x2 - x - 20
mafiozo [28]

Answer:

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Step-by-step explanation:

We can look at it by thinking of two numbers, that add up to -1 and multiply to -20. We can first do this by looking at factors of -20, which are 1, -20, -1, 20, 2, -10, -2, 10, and so on. After looking through it, we can notice that -5 and 4 added equal -1, and when multiplied equal to -20, so they work. So, we factor to (x+4)(x-5)

3 0
1 year ago
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Semmy [17]

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Step-by-step explanation:

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If = and x > 0 what is the value of x ?
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on Saturday Leo and his brother drove into town to visit their mom Leo is trying to remember how much he spent on gas and tolls
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