Question

a^3+8b^3 ifa+2b=10and ab=15

Answer 1

Answer:

${a}^{3} + (2b) {}^{3} = (a + 2b) {}^{3} - 3 \times a \times 2b(a + 2b)$

$so \: {a}^{3} + 8b {}^{3} = {10}^{3} - 3 \times 2 \times 15 \times 10 = 1000 - 900 = 100 \: ans.$

Answer 2

Answer:

-200 is the answer......