Math, asked by kundariyakunj, 8 months ago

Find the value of a + b -2c when a=3, b=2 and c= -1​

Answers

Answered by anshu005512
0

Step-by-step explanation:

We know that

a

3

+b

3

+c

3

−3abc=(a+b+c)(a

2

+b

2

+c

2

−ab−bc−ca)

As a+b+c=0, so, a

3

+b

3

+c

3

−3abc=(0)(a

2

+b

2

+c

2

−ab−bc−ca)=0

Hence, a

3

+b

3

+c

3

=3abc.

Answered by AKKI08SIDDARTH
2

3 + 2 - 2 \times  - 1

5 - ( - 2)

5 + 2 = 7

So 7 is solution

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