Question

21x²y³+27x³y² factorise the following


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Answer 1

Answer:

3x²y²(7y + 9x)

Step-by-step explanation:

21x²y³+27x³y²

= 3x²y²(7y + 9x)

Answer 2

Answer:

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Step-by-step explanation:

21x2y3 + 27x3y2

= 3 × 7 × x × x × y × y × y + 3 × 3 × 3 × x × x × x × y × y

= 3 × x × x × y × y (7y + 9x) (Using ab + ac = a (b + c))

= 3x2y2 (7y + 9x)