What is factor 20z^2-23z-21 ?

The solution to factor 20z^2-23z-21 is (5z+3)(4z-7)

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factor 20z^2-23z-21

factor

20 z^{2} - 23 z - 21

(5 z + 3) (4 z - 7)

Solution steps

20 z^{2} - 23 z - 21

Break the expression into groups

= (20 z^{2} + 12 z) + (- 35 z - 21)

Factor out

4 z

from

20 z^{2} + 12 z : 4 z (5 z + 3)

Factor out

- 7

from

- 35 z - 21 : - 7 (5 z + 3)

= 4 z (5 z + 3) - 7 (5 z + 3)

Factor out common term

5 z + 3

= (5 z + 3) (4 z - 7)

(\frac{x ^{- 3}}{y ^{2}})^{- 4}

\frac{d}{d x} ((- \frac{x}{2} + 4)^{2} - 3 (- \frac{x}{2} + 4))

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

16 z^{2} - 25 < 0

x - 5 \leq 0

What is factor 20z^2-23z-21 ?
The solution to factor 20z^2-23z-21 is (5z+3)(4z-7)