# maths

factorise completely:xsquared-4x-5

1. 👍
2. 👎
3. 👁
1. x^2 - 4x - 5. -5 = 1*(-5). -5+1 = -4 = B.

x+1 = 0. X = -1.

x + (-5) = 0. or x-5 = 0. X = 5.

x^2 - 4x - 5 = (x+1)(x-5).

1. 👍
2. 👎

## Similar Questions

1. ### math

solve the quadratic equation xsquared - 2x - 3 = 0

2. ### maths

factorise completely:2ax-4bx-ay-2by

3. ### math

Factorise completely: 1)3g-3t+2mg-2mt 2)3x squared + 2x-8 3)3x squared-27

4. ### pure maths

use trapezium rule with 3 intervals to estimate the value of intergrating x=0 and x=3 squarerooting 1+xsquared

1. ### algebra

factorise 9- a^6+2a^3b^3-b^6

2. ### math

xsquared-4y squared when x=-16 y=17

4. ### maths

simplify xsquared-4x÷xsquared-2x-8

1. ### Maths

How to do factorise ? What is Factorise ? Give me some examples ,please . Thank you !

2. ### math

let f(x)=3x-2 and g(x)= xsquared+6 then (f*g)(x)

3. ### math

I need help with 4 mat problems. I do not know how to set up to solve. x/8=-6 -4/9+(-5/7) x-4/5=6/7 7/x=?/xsquared

4. ### Mathematics

Describe the end behavior of each function F(x)=-Xsquared -2x+3