What is factor 4x^2-25x-21 ?

The solution to factor 4x^2-25x-21 is (4x+3)(x-7)

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factor 4x^2-25x-21

factor

4 x^{2} - 25 x - 21

(4 x + 3) (x - 7)

Solution steps

4 x^{2} - 25 x - 21

Break the expression into groups

= (4 x^{2} + 3 x) + (- 28 x - 21)

Factor out

x

from

4 x^{2} + 3 x : x (4 x + 3)

Factor out

- 7

from

- 28 x - 21 : - 7 (4 x + 3)

= x (4 x + 3) - 7 (4 x + 3)

Factor out common term

4 x + 3

= (4 x + 3) (x - 7)

20 a b^{2} - 15 a^{2} b

2 (4)^{2}

0 = 12 x^{2} - 176 + 484

4 - 2 (3 x + 1) = 32

4 y^{4} a + 12 y^{2} a + 10 y^{2} a + 30