Question

If a = 2 , b = 1 and c = 5thenfind value of ab + bc - ca​

Answer 1

Answer:

ab+bc-ca = 2×1 + 1×5 - 5×2 = 2+5-10 = 7-10 = -3

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Answer 2

Step-by-step explanation:

a=2

b=1

c=5

ab+bc-ca

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

2+5-10

7-10

-3

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