Question

Question 6 expansions

Answer 1

hey buddy,

here is your ans..

I hope it helps you

thank you

have a good night

Answer 2

Step-by-step explanation:

${a}^{2} + {b}^{2} = 13 \\ ab = 6 \\ \\ (i) \: {(a + b)}^{2} = {a}^{2} + {b}^{2} + 2ab \\ \: \: \: \: \: \: {(a + b)}^{2} = 13 + 12 \: \: = 25 \\ \: \: \: \: \: \: \: a + b \: \: \: \: = 5 \\ \\ (ii) \: {(a - b)}^{2} = {a}^{2} + {b}^{2} - 2ab \\ {(a - b)}^{2} = 13 - 12 = 1 \\ \: \: \: a - b \: = 1$