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4 years ago

Simplify (x2 + 3x)(x2 - x +4)

Mathematics

1 answer:

umka21 [38]4 years ago

8 0

Answer:

x⁴ +2x³ + x² + 12x

Step-by-step explanation:

(x² + 3x)(x² - x +4)

= x²(x²) - x(x²) + 4(x²) + x²(3x) - x(3x) + 4(3x)

= x^4 - x³ + 4x² + 3x³-3x²+12x

= x⁴ +2x³ + x² + 12x

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If f(x) = kx^3+ x^2 − kx + 2, find a number k such that the graph of f contains the point (k, -10)

Elina [12.6K]

If we write $k$ where we see $x$ in the equation and set the result equal to $-10$ , we get the result.

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1 year ago

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alekssr [168]

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Step-by-step explanation:

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3 years ago

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LenaWriter [7]

Answer:

Step-by-step explanation:

-2 + 40x + 62 = 180 They are same side interior angles and add to 180

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3 years ago

Suppose the sample space for a probability experiment has 8 elements. If elements from the sample are selected without replaceme

Gwar [14]

Answer: Number of ways $=\dfrac{8!}{8!0!}\ or \ 1$

Step-by-step explanation:

When there is no replacement , we use combination to find the number of ways to choose things.

Number of ways to choose r things out of ( with out replacement) = $^nC_r=\dfrac{n!}{r!(n-r)!}$

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4 years ago

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