Question

Multiply 5a -l by 7a-b
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Answer 1

Step-by-step explanation:

Multiply 5a -l by 7a-b

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Answer 2

Answer:

The answer is

$35 {a}^{2} - 5ab - 7a + b$

Step-by-step explanation:

$(5a - 1)(7a - b) \\ = 5a(7a - b) - 1(7a - b) \\ = 35 {a}^{2} - 5ab - 7a + b$