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Popular >

factor r^2-r-2

Solution

factor

r^{2} - r - 2

Solution

(r + 1) (r - 2)

Solution steps

r^{2} - r - 2

Break the expression into groups

= (r^{2} + r) + (- 2 r - 2)

Factor out

r

from

r^{2} + r : r (r + 1)

Factor out

- 2

from

- 2 r - 2 : - 2 (r + 1)

= r (r + 1) - 2 (r + 1)

Factor out common term

r + 1

= (r + 1) (r - 2)

Popular Examples

expand u(t-1)expand

u (t - 1)

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\frac{x ^{2} + 8 x - 84}{x - 6}

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\frac{3 y}{4} + \frac{5 y}{4}

simplify (1/125)^{-1/3}simplify

(\frac{1}{125})^{- \frac{1}{3}}

simplify (32a^7b^5+48a^6b^4-a^4b^3)/(8ab^3)simplify

\frac{32 a ^{7} b ^{5} + 48 a ^{6} b ^{4} - a ^{4} b ^{3}}{8 a b ^{3}}

Frequently Asked Questions (FAQ)

What is factor r^2-r-2 ?
The solution to factor r^2-r-2 is (r+1)(r-2)