What is factor a^2-2a-63 ?

The solution to factor a^2-2a-63 is (a+7)(a-9)

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factor a^2-2a-63

factor

a^{2} - 2 a - 63

(a + 7) (a - 9)

Solution steps

a^{2} - 2 a - 63

Break the expression into groups

= (a^{2} + 7 a) + (- 9 a - 63)

Factor out

a

from

a^{2} + 7 a : a (a + 7)

Factor out

- 9

from

- 9 a - 63 : - 9 (a + 7)

= a (a + 7) - 9 (a + 7)

Factor out common term

a + 7

= (a + 7) (a - 9)

4 x^{2} - 19 - 5

2 x^{2} + 5 x - 12 \leq 0

2 - 4 x \leq 12

49 + 14 x + x^{2}

(- 6)^{0}