MyQuestionIcon

1

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

Factorisation Using Algebraic Identities

Factorise q...

Question

Factorise $q^{2} - 10 q + 21$

A

(q - 7) (q - 3)

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

B

(q - 2) (q - 4)

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

(q - 1) (q - 5)

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

(q - 9) (q - 2)

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C $(q - 7) (q - 3)$
Consider, $q^{2} - 10 q + 21$
$= q^{2} - 7 q - 3 q + 21$
$= q (q - 7) - 3 (q - 7)$
$= (q - 7) (q - 3)$

Suggest Corrections

thumbs-up

6

Similar questions

q^{2} - 10 q + 21

Q. Question 5(ii)
Factorise the following expressions

q^{2} - 10 q + 21

Q. Factorise the following expression.

q^{2} - 10 q + 21

Q. Factorise the following expressions.

q^{2} - 10 q + 21

Q. Factorise the following expressions.
(i)

p^{2} + 6 p + 8

q^{2} - 10 q + 21

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Method of Identities

MATHEMATICS

Watch in App

explore_more_icon

Explore more

Factorisation Using Algebraic Identities

Standard VIII Mathematics

Join BYJU'S Learning Program

CrossIcon