What is factor a^2-ab-2b^2 ?

The solution to factor a^2-ab-2b^2 is (a+b)(a-2b)

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factor a^2-ab-2b^2

factor

a^{2} - ab - 2 b^{2}

(a + b) (a - 2 b)

Solution steps

a^{2} - ab - 2 b^{2}

Break the expression into groups

= (a^{2} + ab) + (- 2 ab - 2 b^{2})

Factor out

a

from

a^{2} + ab : a (a + b)

Factor out

- 2 b

from

- 2 ab - 2 b^{2} : - 2 b (a + b)

= a (a + b) - 2 b (a + b)

Factor out common term

a + b

= (a + b) (a - 2 b)

2 x^{2} + x - 28

s^{2} - 1 > 1

6 - 3 x \leq 12

x^{3} - 16 x \leq 0

6 x^{2} - 21 x + 15