Question

If A2 + B2 = 17 and AB = 4. Find the value
(A + B).
(b) 10
(c) 14
(d) 21
(a) 5​

Answer 1

Answer:

Answer is Given Above ... This Question is about substitution of valies

Answer 2

$\mathbf \red{given}$

a²+b²=17,ab=4

a+b=?

a²+b²=(a+b)²-2ab

17=(a+b)²-2×4

(a+b)²=17+8

(a+b)²=25

a+b=root under 25

a+b=5

so,option (a)