Question

Expand (-2a-b+3c) plz its urgent​

Answer 1

Step-by-step explanation:

Correct is

4a

2

+b

2

9c

2

−4ab+6bc−12ca

2a−b−3c

Squaring, we get

=(2a−b−3c)

2

=(2a)

2

+(−b)

2

+(−3c)

2

+2(2a)(−b)+2(−b)(−3c)+2(−3c)(2a)

=4a

2

+b

2

+9c

2

−4ab+6bc−12ca

please mark me brainliest please