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ValentinkaMS [17]
3 years ago
15

3x to the power of 3 + 21x squared + 36x = 0 by factoring the quadratic equation.

Mathematics
1 answer:
Diano4ka-milaya [45]3 years ago
5 0

Answer:

x = 0, -4 and -3.

Step-by-step explanation:

The given expression is "3x to the power of 3 + 21x squared + 36x = 0".

We can write this expression as follows :

3x^3+21x^2+36x=0

Taking 3x common.

3x(x^2+7x+12)=0\\\\3x=0\ \text{and}\ (x^2+7x+12)=0

x = 3

x^2+7x+12=0\\\\x^2+3x+4x+12=0\\\\x(x+3)+4(x+3)=0\\\\(x+4)(x+3)=0\\\\x=-4,-3

Hence, the solution of the given quadratic equation are x = 0, -4 and -3.

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A line with a slope of 8 passes through the points (-1,1) and (0,k). What is the value of k?
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Answer:

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Step-by-step explanation:

Calculate the slope m using the slope formula and equate to 8

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

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2 years ago
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Step-by-step explanation:

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