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Factorise each of the 6ab-9ab...

Factorise each of the
`6ab-9ab`

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To factorise the expression \(6ab - 9ab\), we can follow these steps: ### Step 1: Identify the common factor Look for the common factor in both terms of the expression \(6ab\) and \(9ab\). The common factor here is \(3ab\). ### Step 2: Factor out the common factor We can factor out \(3ab\) from both terms: \[ 6ab - 9ab = 3ab(2 - 3) \] ### Step 3: Simplify the expression inside the brackets Now, simplify the expression inside the brackets: \[ 2 - 3 = -1 \] So, we can rewrite the expression as: \[ 3ab(-1) \] ### Step 4: Write the final factored form Thus, the final factored form of the expression \(6ab - 9ab\) is: \[ -3ab \] ### Summary of the solution The expression \(6ab - 9ab\) can be factored as: \[ -3ab \]
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