Question

if a-b =3 and ab=5 then a³-b³=​

Answer 1

Answer:

a ³ - b ³

( a - b ) ( a² + ab + b² )

Step-by-step explanation:

3 × {a ² + b ² + 5 }

3 × { ( a + b )² - 2ab + 5}

3 × { a ² + b ² + 2ab - 2ab + 5}

3 × { ( a - b )² + 2ab + 5}

3 × { 3² + 2 × 5 + 5 }

3 × { 9 + 10 + 5 }

3 × 24

72

plz mark as brainliest