Register
Factorise 49 a^2 + 4b^2 +9c^2 -28ab + 12bc- 42 ac
66.2k views
1 vote
Factorise 49 a^2 + 4b^2 +9c^2 -28ab + 12bc- 42 ac

User Sanath Meti
by
4.6k points

1 Answer

5 votes
49a^2 + 4b^2 + 9c^2 -28ab + 12bc- 42ac

= (7a)^2 + (-2b)^2 + (-3c)^2 + (2*7a*-2b) + (2*-2b*-3c) + (2*-3c*7a)

=(7a - 2b - 3c)^2 (Answer)
User Sdm
by
5.0k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

5.3m questions

6.9m answers

Other Questions

If the 9-inch wheel of cheese costs $18.60, what is the cost per square inch? If the cost is less than a dollar, put a zero to the left of the decimal point?
how long Will it take for $7000 investment to grow to $7553 and the annual rate of 3.4% compounded quarterly assume that no withdrawals are made
I need to simplify this expression.
Need answer to math problem!!!​
What is the domain and range?
Link Copied!