Question

Factorise: 15x²y3 - 25x°y​

Answer 1

Answer:

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Answer 2

15x3y2z = 3 × 5 × x × x × x × y × y × z 25xy2z3 = 5 × 5 × x × y × y × z × z × z

The common factors are 5, x, y and z. 15x3y2z - 25xy2z3 = (3 × 5 × x × x × x × y × y × z) - (5 × 5 × x × y × y × z × z × z)

= 5 × x × y × y × z (3 × x × x - 5 × z × z) = 5xy2z (3x2 - 5z2)