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How to Find the Inverse of a Function

State whether...

Question

State whether the statement is True or False.
Evaluate: $(9 a - 7 b) (3 a - b)$ is equal to $27 a^{2} - 30 a b + 7 b^{2}$ .

A

True

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B

False

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Solution

The correct option is A True
$M u l t i p l y (9 a - 7 b) (3 a - b) = 27 a^{2} - 9 a b - 21 a b + 7 b^{2} = 27 a^{2} - 30 a b + 7 b^{2}$

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