Question

if A+b and A²+b²=16 find ab
​

Answer 1

Answer:

68,

Step-by-step-explaination:

a + b = 10 ------------- ( 1 )

ab = 16 -----------------( 2 )

Square the equation ( 1 )

( a + b )^2 = ( 10 )^2

a^2 + b^2 + 2ab = 100

a^2 + b^2 + 2 x 16 = 100 [ form ( 2 ) ]

a^2 + b^2 + 32 = 100

a^2 + b^2 + 100 - 32

a^2 + b^2 = 68

>>>>>>>>>>>°<<<<<<<<<<<