Question

find the value of 7a²b²+8b²+5abc where the value of a=-1 b=-2 c=1​

Answer 1

Answer:

7a²b²+8b²+5abc

7 (-1 )^2 ( -2) ^2 + 8 ( -2 ) ^2 + 5 (-1) (-2) (1)

7 × 1 × 4 + 8 × 4 +5 × (-2)

28 + 32 + (-10)

28 + 32 - 10

60 - 10

50

Step-by-step explanation:

hence 50 is the answer

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