Question

factors of xsquare-5x+4​

Answer 1

Answer:

◦Answer

Using identity (x+a)(x+b)=x

2

+(a+b)x+ab

Thus x

2

+5x+4

=x

2

+4x+x+4

=x(x+4)+1(x+4)

=(x+4)(x+1)

Answer 2

$\bold \red{x^2 −5x+4}$

$\bold \pink{=x^2−4x−x+4}$

$\bold \blue{=x(x−4)−1(x−4)}$

$\bold \green{=(x−4)(x−1)}$

$\bold \purple{∴x^2−5x+4=(x−4)(x−1)}$