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Question
If a = 2 and b = 3, find the value of 5a2 − 2ab
Sum
Solution
\[5 a^2 - 2ab\]
Substituting a=2 and b=3 in the given expression:
\[5 \times (2 )^2 - 2 \times 2 \times 3 = 5 \times 4 - 12 = 20 - 12\]
\[ = 8\]
Substituting a=2 and b=3 in the given expression:
\[5 \times (2 )^2 - 2 \times 2 \times 3 = 5 \times 4 - 12 = 20 - 12\]
\[ = 8\]
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