What is factor a^2-a-42 ?

The solution to factor a^2-a-42 is (a+6)(a-7)

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factor a^2-a-42

factor

a^{2} - a - 42

(a + 6) (a - 7)

Solution steps

a^{2} - a - 42

Break the expression into groups

= (a^{2} + 6 a) + (- 7 a - 42)

Factor out

a

from

a^{2} + 6 a : a (a + 6)

Factor out

- 7

from

- 7 a - 42 : - 7 (a + 6)

= a (a + 6) - 7 (a + 6)

Factor out common term

a + 6

= (a + 6) (a - 7)

150 m^{2} n z + 20 m n^{2} c - 120 m^{2} n c - 25 m n^{2} z

- 1 - \frac{3}{2}

\frac{9 !}{6 !}

49 n^{2} - 56 n + 16

2^{11}