What is factor 5x^2+21x-20 ?

The solution to factor 5x^2+21x-20 is (5x-4)(x+5)

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factor 5x^2+21x-20

factor

5 x^{2} + 21 x - 20

(5 x - 4) (x + 5)

Solution steps

5 x^{2} + 21 x - 20

Break the expression into groups

= (5 x^{2} - 4 x) + (25 x - 20)

Factor out

x

from

5 x^{2} - 4 x : x (5 x - 4)

Factor out

5

from

25 x - 20 : 5 (5 x - 4)

= x (5 x - 4) + 5 (5 x - 4)

Factor out common term

5 x - 4

= (5 x - 4) (x + 5)

\frac{\frac{16}{5}}{( - \frac{12}{25} )}

3 x^{2} - 9 x + 6

13.48 x - 200 < 256.12

\frac{2 x + 14}{( x + 4 ) ( x + 6 )}

3.2 + 0.3 x = 0.2 x + 1.4