3 years ago

Find the nth term of this quadratic sequence 3, 8, 15, 24, 35, ...

Mathematics

1 answer:

SpyIntel [72]3 years ago

7 0

Answer:

$s_n = (n+1)^2-1$

Step-by-step explanation:

This assumes that the first item coincides with n=1.

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Area model division 246÷3

lord [1]

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AfilCa [17]

Answer:

Therefore the value of x is

$x=1\pm\sqrt{19}i$

Step-by-step explanation:

Given:

$x^{2}+20=2x$ which is

$x^{2}-2x+20=0$

To Find:

x = ? using Quadratic Formula

Solution:

For a Quadratic Equation ax² + bx + c = 0 , Formula Method is given as

$x=\dfrac{-b\pm\sqrt{b^{2}-4ac}}{2a}$

On Comparing with above we get

$a=1\\b=-2\\c=20$

Substituting a , b , c in Formula method we get

$x=\dfrac{-(-2)\pm\sqrt{(-2)^{2}-4(1)(20)}}{2\times 1}\\\\x=\dfrac{2\pm\sqrt{-76}}{2}\\\\x=\dfrac{2\pm2\sqrt{19}i}{2}\\Dividing\ by\ 2\ we\ get\\\\x=1 \pm\sqrt{19}i$

Therefore the value of x is

$x=1\pm\sqrt{19}i$

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3 years ago

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OlgaM077 [116]

Answer:

GIRL NO WAY IM LITTERALY TAKING THAT TEST RN AND IM TRYING TO FIGURE OUT THAT SAME QUESTION LOL

Step-by-step explanation:

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2 years ago

What is the value of f-1(4)

scZoUnD [109]

Answer:

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Nady [450]

Answer:

Step-by-step explanation:

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