CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Roots of Quadratic Equation

Factorise : ...

Question

Factorise :
$x^{2} - 21 x + 90$

Open in App

Solution

To Factorise : $x^{2} - 21 x + 90$
By splitting the middle term
$= x^{2} - 6 x - 15 x + 90$
$= x (x - 6) - 15 (x - 6)$
$= (x - 6) (x - 15)$
So, $x^{2} - 21 x + 90 = (x - 6) (x - 15)$

Suggest Corrections

thumbs-up

1

Similar questions

x^{2} - 21 x + 110

x^{2} - 21 x + 90

21 x^{2} - 31 x + 8

x^{2} + x^{4} = 90

{7 x}^{3} z - 21 x z^{2}

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Solving QE by Factorisation

MATHEMATICS

Watch in App

explore_more_icon

Explore more

Roots of Quadratic Equation

Standard X Mathematics

Join BYJU'S Learning Program

CrossIcon