Question

answer urgently


if you can​

Answer 1

Answer:

is ur answer

as brainliest

Answer 2

Step-by-step explanation:

$(a + b) ^{2} = a ^{2} + b ^{2} + 2ab \\ (a + b) ^{2} = 42 + 2 \times 4 \\ (a + b) ^{2} = 42 + 8 \\ (a + b) ^{2} = 50 \\ (a + b) = 5 \sqrt[]{2}$