What is factor 20a^2+a-1 ?

The solution to factor 20a^2+a-1 is (5a-1)(4a+1)

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factor 20a^2+a-1

factor

20 a^{2} + a - 1

(5 a - 1) (4 a + 1)

Solution steps

20 a^{2} + a - 1

Break the expression into groups

= (20 a^{2} - 4 a) + (5 a - 1)

Factor out

4 a

from

20 a^{2} - 4 a : 4 a (5 a - 1)

= 4 a (5 a - 1) + (5 a - 1)

Factor out common term

(5 a - 1) : (5 a - 1) (4 a + 1)

= (5 a - 1) (4 a + 1)

\frac{\frac{4.5}{5} + \frac{5}{5}}{2}

\frac{13 !}{7 ! 6 !}

(1 + x) (1 - 3 x)^{3}

5 x^{2} - 26 x - 24