Question

which are perfect trinomial Square ?

x² - 5x + 4​

Answer 1

Answer:

To create a trinomial square on the left side of the equation, find a value that is equal to the square of half of

b

.

(

b

2

)

2

=

(

−

5

2

)

2

Add the term to each side of the equation.

x

2

−

5

x

+

(

−

5

2

)

2

=

−

4

+

(

−

5

2

)

2

Simplify the equation.

Tap for more steps...

x

2

−

5

x

+

25

4

=

9

4

Factor the perfect trinomial square into

(

x

−

5

2

)

2

.

(

x

−

5

2

)

2

=

9

4

Solve the equation for

x

.

Tap for more steps...

x

=

4

,

1

Step-by-step explanation:

mark me brainlist

Answer 2

$\sf \: \pink{x^2−5x+4}$

$\sf \implies x^2 −4x−x+4$

$\sf \implies =x(x−4)−1(x−4)$

$\sf \implies=(x−4)(x−1)$

$\sf \implies∴x^2 −5x+4= \red{\bold{(x−4)(x−1)}}$