Question

If a+b=9 and ab=20,then find the value of (a^3+b^3).​

Answer 1

$\huge\boxed{\fcolorbox{purple}{pink}{Answer:-}}$

• 189

$\huge\boxed{\fcolorbox{purple}{pink}{Explanation:-}}$

${\huge{\underline{\underline{\mathfrak{\purple{Given:-}}}}}}$

$a + b = 9 \: \: \: \: \: and \: \: \: ab = 20$

${\huge{\underline{\underline{\mathfrak{\purple{Now,}}}}}}$

${a}^{3} + {b}^{3} \\ = > {(a + b)}^{3} - 3ab(a + b) \\ = > {9}^{3} - 3 \times 20 \times 9 \\ = > 729 - 540 \\ = > 189$

Answer 2

Step-by-step explanation:

189 ... IS YOUR ANSWER ..

GOOD LUCK