What is factor x^2-22x+21 ?

The solution to factor x^2-22x+21 is (x-1)(x-21)

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factor x^2-22x+21

factor

x^{2} - 22 x + 21

(x - 1) (x - 21)

Solution steps

x^{2} - 22 x + 21

Break the expression into groups

= (x^{2} - x) + (- 21 x + 21)

Factor out

x

from

x^{2} - x : x (x - 1)

Factor out

- 21

from

- 21 x + 21 : - 21 (x - 1)

= x (x - 1) - 21 (x - 1)

Factor out common term

x - 1

= (x - 1) (x - 21)

- 1 - \frac{8}{3} (\frac{1}{4} x) = 2

\frac{2 x - 1}{4} + \frac{x}{3} = 2

3200

\frac{1}{5} \cdot 4

\frac{2 n - 9}{7} = \frac{3 - n}{4}