Question

Find the value of the expression: 3a2 + 5b2 – 2abc, if a = 2, b = (-2) and c = 1

Answer 1

Answer:

3(2)2 + 5(-2) - 2(2)(-2)(1)

12+(-10) -(-8)

12-10+8

6

Answer 2

Answer:

24

Step-by-step explanation:

3a^2+5b^2-2abc

taking a=2, b=(-2) and c=1

3(2)^2+5(-2)^2-2(2)(-2)(1)

=3(4)+5(4)-8

=12+20-8

=32-8

=24

I hope it helps.

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