What is factor x^2+4x^2-4x-16 ?

The solution to factor x^2+4x^2-4x-16 is 5(x-(2(1+sqrt(21)))/5)(x+(2(sqrt(21)-1))/5)

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factor x^2+4x^2-4x-16

factor

x^{2} + 4 x^{2} - 4 x - 16

5 (x - \frac{2 ( 1 + 21 )}{5}) (x + \frac{2 ( 21 - 1 )}{5})

Solution steps

x^{2} + 4 x^{2} - 4 x - 16

Add similar elements:

x^{2} + 4 x^{2} = 5 x^{2}

= 5 x^{2} - 4 x - 16

Rewrite as

= 5 (x^{2} - \frac{4 x}{5} - \frac{16}{5})

Factor

x^{2} - \frac{4 x}{5} - \frac{16}{5} : (x - \frac{2 ( 1 + 21 )}{5}) (x - \frac{2 ( 1 - 21 )}{5})

5 (x - \frac{2 ( 1 + 21 )}{5}) (x - \frac{2 ( 1 - 21 )}{5})

Factor

2 (1 - 21) : - 2 (21 - 1)

= 5 (x - \frac{2 ( 1 + 21 )}{5}) (x - \frac{- 2 ( 21 - 1 )}{5})

Apply the fraction rule:

\frac{- a}{b} = - \frac{a}{b}

= 5 (x - \frac{2 ( 1 + 21 )}{5}) (x - (- \frac{2 ( 21 - 1 )}{5}))

Apply rule

- (- a) = a

= 5 (x - \frac{2 ( 1 + 21 )}{5}) (x + \frac{2 ( 21 - 1 )}{5})

4 x^{3 + 3 x^{2} + 5 x + 9}

[ab]

e^{5 x} \cdot (6 b sin (6 x))

32 m^{15} - 243 n^{10}

15 e^{2} + 28 e + 5

What is factor x^2+4x^2-4x-16 ?
The solution to factor x^2+4x^2-4x-16 is 5(x-(2(1+sqrt(21)))/5)(x+(2(sqrt(21)-1))/5)