Question

If a=3 and b=5, find the value of (a+b)²-a³

Answer 1

Answer:

$given \: a = 3 \: \: b = 5 \\ \\ find \ \: : ( {a + b})^{2} - {a}^{2} \\ \\ : ( {3 + 5})^{2} - {3}^{2} \\ {8}^{2} - {3}^{2} \\ 64 - 9 \\ 55$