What is factor u^2-3u-28 ?

The solution to factor u^2-3u-28 is (u+4)(u-7)

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factor u^2-3u-28

factor

u^{2} - 3 u - 28

(u + 4) (u - 7)

Solution steps

u^{2} - 3 u - 28

Break the expression into groups

= (u^{2} + 4 u) + (- 7 u - 28)

Factor out

u

from

u^{2} + 4 u : u (u + 4)

Factor out

- 7

from

- 7 u - 28 : - 7 (u + 4)

= u (u + 4) - 7 (u + 4)

Factor out common term

u + 4

= (u + 4) (u - 7)

t^{2} - \frac{2}{7} t + \frac{1}{49}

\frac{8 ! 5 !}{9 ! 2 !}

x^{3} - 121 x \leq 0

5 \cdot 1 = (5 + 1)^{2}

b^{4} - 16