What is factor z^2+z-20 ?

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

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factor z^2+z-20

factor

z^{2} + z - 20

(z - 4) (z + 5)

Solution steps

z^{2} + z - 20

Break the expression into groups

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

Factor out

z

from

z^{2} - 4 z : z (z - 4)

Factor out

5

from

5 z - 20 : 5 (z - 4)

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

Factor out common term

z - 4

= (z - 4) (z + 5)

x^{2} - 11 x - 12 = 0

81 x^{2} + 72 x + 16

x^{2} + 5 x + 6

\frac{2 x + 19}{3} = 5

8 m + 95 < - 87 m + 58 m + 95 < - 87 m + 5