Question

Find the value of a sqare +b square if a+b=9 and ab=3​

Answer 1

Answer:

$\blue{\boxed{\sf Given}}$

a+b=9 , ab=3

$\green{\boxed{\sf To\: find }}$

a²+b²=?

$\pink{\boxed{\sf Now}}$

It is given that :

a+b=9

SQUARING BOTH SIDES WE GET

(a+b)²=(9)²

a²+b²+2ab=81

a²+b²+2×3=81

a²+b²=75

$\huge\red{\boxed{\sf a²+b²=75}}$

Answer 2

Answer:

a^2+b^2=75

Step-by-step explanation:

squaring both sides.

(a+b)^2 (9)^2

a^2+b^2+2ab=81

a^2+b^2+ 2×3=81

a^2 + b^2=75.